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How Wheels Really Work | Neil deGrasse Tyson Explains...

Video vocabulary

exterior

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US / ɪkˈstɪəriə(r) /

UK / ɪkˈstɪriɚ /

B1
  • adjecitve
  • External; of the outside part
  • noun
  • Outside layer or surface
  • Way a person appears or seems to other people

good

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US / ɡʊd /

UK / ɡʊd /

A1
  • adjecitve
  • Proper, appropriate or right
  • (Of an amount) enough; plenty
  • Excellent; high quality
  • Acting well or properly; of moral character
  • In a positive or happy emotional state
  • noun
  • Advantage or benefit

would

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US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

signal

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US / 'sɪɡnəl /

UK / ˈsɪɡnəl /

A2
  • adjecitve
  • Most important or most noticeable
  • noun
  • Movement of a hand or other means to send messages
  • Act/sound that tells people to do/start something
  • Road-side lights that direct traffic to go or stop
  • Sound and light waves carrying TV and radio data
  • verb
  • To be evidence/an indication something will happen
  • To make a noise or motion to tell someone to start

differ

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US / 'dɪfə(r) /

UK / ˈdɪfɚ /

B1
  • verb
  • To be different; to be not like others

powerful

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US / ˈpauəful /

UK / ˈpaʊəfəl /

A2
  • adjecitve
  • Having control or influence over
  • Having a lot of physical force, energy, strength

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

doggone

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US / ˈdɒgɒn /

UK / ˈdɔ:gɔ:n /

A1
  • other

smooth

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US / smu:ð /

UK / smuð /

A2
  • adjecitve
  • Moving without stops and starts
  • Pleasant and flat to touch, not rough
  • Being free from problems or difficulties
  • verb
  • To make something rough feel flat, e.g. by ironing
  • To spread a substance over a surface

twirl

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US / twɜ:l /

UK / twə:l /

C1
  • noun
  • Turning/spinning quickly, as to show off a dress
  • verb
  • To turn or spin someone or something very quickly

gun

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US / ɡʌn /

UK / ɡʌn /

A2
  • noun
  • Weapon which fires bullets down a tube
  • verb
  • To suddenly make an engine run faster

not

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US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

skid

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US / skɪd /

UK / skɪd /

B2
  • noun
  • An uncontrolled slide along a surface
  • verb
  • To slide along a surface in an uncontrolled way

aback

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US / əˈbæk /

UK / əˈbæk /

A1
  • adverb
  • Toward or situated to the rear; back.
  • With the sail pressed backward against the mast by a headwind.

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

dot

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US / dɒt /

UK / dɑt /

B1
  • noun
  • Small round mark
  • verb
  • To place small amounts/things in various places
  • To mark something by placing a small, round spot

nah

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US / nɑ: /

UK / nɑ: /

B2
  • noun
  • Way of saying 'No'

give

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US / ɡɪv /

UK / ɡɪv /

A1
  • noun
  • Degree of flexibility in something, a material
  • verb
  • To hand over or present something to someone
  • To cause someone to have or experience something

brother

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US / ˈbrʌðə(r) /

UK / ˈbrʌðɚ /

A1
  • noun
  • A boy or man who shares a parent with you

pleasure

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US / 'pleʒə(r) /

UK / ˈplɛʒɚ /

A2
  • noun
  • Feeling of happiness, enjoyment, or satisfaction

really

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US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

pick

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US / pɪk /

UK / pɪk /

A1
  • noun
  • Sharp tool used for breaking the ground
  • Item selected from a group of choices
  • verb
  • To take fruit or vegetables from a plant or tree
  • To decide on a thing from various choices; select
  • To remove (flower, etc.) with your fingers

convert

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US / kən'vɜ:t /

UK / kənˈvɚt /

A2
  • noun
  • Person switching from one belief system to another
  • verb
  • To switch from a religion, belief etc. to another
  • To change form, character, or function to another

deep

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US / di:p /

UK / dip /

A1
  • adjecitve
  • Complex and important
  • Extreme or intense
  • Going far down from the surface
  • Low in pitch, as a sound
  • adverb
  • At a certain distance beneath the surface

chemical

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US / ˈkemɪkl /

UK / ˈkɛmɪkəl /

A2
  • adjecitve
  • Made of various elements
  • noun
  • Basic substance produced by mixing elements

seventh

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US / 'sevnθ /

UK / ˈsɛvənθ /

A1
  • noun
  • 7th

below

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US / bɪ'ləʊ /

UK / bɪˈlo /

A1
  • preposition
  • In a lower position, place, or level

tire

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US / ˈtaɪə(r) /

UK / taɪr /

B1
  • noun
  • Black rubber part of wheels on a vehicle
  • The rubber rings around wheels on cars and trucks
  • verb
  • To lose, cause to lose energy so you want to rest

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

kind

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US / kaɪnd /

UK / kaɪnd /

A1
  • adjecitve
  • In a caring and helpful manner
  • friendly and considerate
  • noun
  • One type of thing

outside

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US / ˌaʊtˈsaɪd /

UK / aʊtˈsaɪd, ˈaʊtˌsaɪd /

A2
  • adverb
  • Beyond the limits or edges of some place, thing
  • noun
  • Area around or near something, such as a building
  • preposition
  • Beyond the limits or edges of some place, thing

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

axle

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US / ˈæksl /

UK / ˈæksəl /

C1
  • noun
  • Pole around which wheels, usually two, can turn

let

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US / let /

UK / lɛt /

A1
  • verb
  • To allow someone to do something
  • Introducing a suggestion to do something together
  • To rent a house, etc. to others

man

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US / mæn /

UK / mæn /

A1
  • noun
  • Humans in general, including male and female
  • An adult male human being
  • Male who acts in a masculine way; not like a woman
  • verb
  • To control or operate (a machine); be in charge of
  • To operate a machine (a boat, etc.)

radar

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US / ˈreɪdɑ:(r) /

UK / ˈredɑr /

B2
  • noun
  • Radio device used to find the location of objects

woman

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US / ˈwʊmən /

UK / ˈwʊmən /

A1
  • noun
  • Adult female human being

contact

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US / 'kɒntækt /

UK / ˈkɑnˌtækt /

A2
  • adjecitve
  • Touching or feeling something
  • noun
  • Touching or feeling something
  • Object that allows electricity to run through it
  • Communication with someone or something
  • People who can give you information, introductions
  • verb
  • To get in touch with someone

forward

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US / 'fɔ:wəd /

UK / ˈfɔrwəd /

A1
  • adjecitve
  • Toward what is ahead; in front
  • Acting in a socially aggressive manner; pushy
  • adverb
  • Toward the front in place; in front
  • Toward a future time; to a more advanced state
  • verb
  • To send something to another address or person

explainer

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US / ɪksp'leɪnə /

UK / ɪksp'leɪnə /

A1
  • noun
  • Someone giving reasons or details about something

other

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US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

less

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US / les /

UK / lɛs /

A1
  • adjecitve
  • Smaller in amount or degree
  • adverb
  • To a smaller degree
  • noun
  • A smaller amount
  • preposition
  • With the subtraction of

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

adjust

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US / əˈdʒʌst /

UK / əˈdʒʌst /

A2
  • verb
  • To change; to attain a desired state or function
  • To change so as to fit in with new conditions

lip

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US / lɪp /

UK / lɪp /

A2
  • noun
  • Edge of a hole or container
  • Top and bottom part of the outside of your mouth

ready

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US / 'redɪ /

UK / ˈrɛdi /

A1
  • adjecitve
  • Being likely or about to do something
  • Being willing to do a task
  • verb
  • To prepare something for use or action

run

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US / rʌn /

UK / rʌn /

A1
  • noun
  • Journey between two places made by ship or car
  • Series of similar things or successes and failures
  • Act of running; exercise of running
  • verb
  • To depart or travel according to a schedule
  • To cause an animal to move in a certain direction
  • (Of an engine) to be operating
  • To start or use a computer program
  • To flow in a certain direction, like a liquid
  • To manage or operate a business
  • To operate or drive something
  • (Of a road) to go from one place to another
  • To move your legs faster than walking

five

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US / faɪv /

UK / faɪv /

A1
  • number
  • 5

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

pull

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US / pʊl /

UK / pʊl /

A1
  • noun
  • Act of breathing in smoke, as from a pipe
  • Force something has that draws other things to it
  • Using your hands to move something to you
  • verb
  • To breathe in smoke, as from a pipe
  • To hold something and move it toward you
  • To remove something by force

spin

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US / spɪn /

UK / spɪn /

B1
  • noun
  • A dizzy feeling your head is turning around
  • A slant or hidden purpose, as in politicians' talk
  • A movement in a rapid turning motion
  • verb
  • To make a ball rotate when throwing it
  • To feel dizzy/confused, as in my head is spinning
  • To convert material such as cotton into thread
  • To move something in a rapid turning motion

than

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US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

might

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US / maɪt /

UK / maɪt /

A1
  • other
  • Used to politely request an action
  • Used to express that something could happen
  • Power, strength, force or influence

rate

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US / reɪt /

UK / ret /

A1
  • noun
  • Current price or cost of something
  • Speed or frequency of events over time
  • verb
  • To assess something or consider its qualities

surprised

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US / səˈpraɪzd /

UK / sərˈpraɪzd /

A1
  • adjecitve
  • Feeling a shock when something unexpected happens
  • verb
  • To do something that another person didn't expect

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

reverse

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US / rɪ'vɜ:s /

UK / rɪˈvɚs /

B1
  • noun
  • Setting that makes the vehicle go backward
  • (Drive a vehicle) backward gear of a vehicle
  • Instance of a significant change, for the worse
  • In a backwards order
  • Back part or side of something
  • verb
  • To drive a vehicle backward
  • To change to an opposite state, way or condition
  • To change back to a previous or normal condition
  • To change something to its opposite

year

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US / jə: /

UK / jɪr /

A1
  • noun
  • Unit of time equal to 12 months or 365 or 366 days
  • Used to refer to the age of a person

return

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US / rɪ'tɜ:n /

UK / rɪ'tɜ:rn /

A1
  • adjecitve
  • Do again; repeated
  • noun
  • Faulty or unwanted product sent back to a company
  • Enter key; the main key on the computer keyboard
  • Profit made as a result of a business activity
  • Process of going back to a previous way or state
  • verb
  • To hit something back to the other player or team
  • To come back after being away from somewhere
  • To repay someone's actions, kindness etc.
  • To put, bring, take, give, or send something back
  • To occur again

top

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US / tɒp /

UK / tɑp /

A1
  • adjecitve
  • Being good or great; excellent
  • Being the most in degree or quality
  • noun
  • Item of clothing covering shoulders to waist, hips
  • A cover or lid
  • Part (e.g. road) that is the furthest away
  • Highest or upper part or point of something
  • Best or highest status or position
  • Flat upper surface or edge of an object
  • Child's toy that spins on its point
  • Upper section or leaves of fruits and vegetables
  • Winning in a sport or contest
  • verb
  • To be higher or larger than a specific value
  • To arrive at the highest point of something
  • To put a cover or layer or over something
  • To kill; murder
  • To hold the highest position on a list
  • To be more important, successful or better than
  • To beat someone or win at a game

design

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US / dɪˈzaɪn /

UK / dɪˈzaɪn /

A1
  • noun
  • The way something is planned, to fulfill a purpose
  • verb
  • To plan in a particular way to fulfill a purpose
  • To think of a plan

pretty

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US / 'prɪtɪ /

UK / ˈprɪti /

A1
  • adjecitve
  • Being attractive to the eye in a simple way
  • adverb
  • Very; to a great degree

build

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US / bɪld /

UK / bɪld /

A1
  • noun
  • Your physical shape; physique
  • verb
  • To establish e.g. a reputation, over time
  • To construct a house, office, factory

yes

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US / jes /

UK / jɛs /

A1
  • adverb
  • Way to say you agree or will do something

excuse

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US / ɪk'skju:s /

UK / ɪkˈskjuz /

A2
  • noun
  • Note explaining why someone cannot do or attend
  • Reason why you did or didn't do something
  • verb
  • To allow someone not to do (jury service, etc.)
  • To explain acting in a bad or impolite manner
  • To forgive someone for something bad or impolite

police

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US / pəˈli:s /

UK / pəˈlis /

A1
  • adjecitve
  • Concerning the police and its business
  • noun
  • People, often in uniforms, who solve crimes
  • verb
  • To control an area, or group with a police force

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

bit

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US / bɪt /

UK / bɪt /

A1
  • noun
  • Device put in a horse's mouth to control it
  • Small piece of something
  • verb
  • (E.g. of fish) to take bait and be caught

quit

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US / kwɪt /

UK / kwɪt /

B1
  • other
  • To leave a school etc. without finishing
  • verb
  • To leave a job
  • To leave a place
  • To leave a school etc. without finishing
  • To end an action or activity

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

reflect

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US / rɪ'flekt /

UK / rɪˈflɛkt /

A2
  • verb
  • To indicate or be a sign of something
  • To bounce back light, heat, sound from a surface
  • To show an image in glass, water, a mirror etc.
  • To think of something seriously and carefully

speedometer

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US / spiːˈdɒmɪtə(r) /

UK / spiːˈdɑːmɪtər /

C2
  • noun
  • Meter fixed to a vehicle that displays its speed

move

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US / mu:v /

UK / muv /

A1
  • noun
  • Act of moving a playing piece in chess, etc.
  • An action; doing something
  • Step taken to achieve a goal
  • verb
  • To cause someone to have certain emotions
  • To cause something to change to a different place
  • To change where people live or a business operates
  • To take action to do or achieve something

snap

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US / snæp /

UK / snæp /

B1
  • noun
  • An informal word for a photograph
  • verb
  • To close your mouth quickly like biting something
  • To break something dry and thin, e.g. a branch
  • To lose control of your emotions; get angry

apologize

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US / ə'pɒlədʒaɪz /

UK / əˈpɑləˌdʒaɪz /

A2
  • verb
  • To say sorry because of a mistake or injury

look

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US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
  • Particular style of dress, clothes, or appearance
  • The way someone, something appears to be
  • Act of searching for or examining something
  • verb
  • To appear to be; seem

curve

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US / kə:v /

UK / kɚv /

A2
  • noun
  • Smooth rounded line that is not straight
  • verb
  • To make something bend into a rounded shape

cop

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US / kɒp /

UK / kɑp /

B2
  • noun
  • Slang for police officer

broadcast

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US / 'brɔ:dkɑ:st /

UK / ˈbrɔdˌkæst /

A2
  • noun
  • Program sent out from a radio or TV station
  • verb
  • To send out signals by radio or television

way

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US / weɪ /

UK / we /

A1
  • adverb
  • Used to emphasize the amount of something
  • noun
  • Particular aspect of something being thought about
  • One of various choices that could be made
  • Particular existing condition or state
  • (Often long) distance or length of time
  • How something is done
  • Route to go to a place
  • Small street
  • Usual behavior, emotions or habits of someone

otherwise

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US / ˈʌðəwaiz /

UK / ˈʌðɚˌwaɪz /

A2
  • adverb
  • In an additional or different way
  • Unless; or

speed

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US / spi:d /

UK / spid /

A2
  • noun
  • How fast or slow something is or is done
  • verb
  • To move quickly when completing an action
  • To drive a vehicle faster than laws allow

tie

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US / taɪ /

UK / taɪ /

A2
  • noun
  • Item, such as string or wire, used to join things
  • Strong connection between people, countries
  • When both sides in a game, vote get same score
  • One match or game that is part of a bigger contest
  • Something that lessens a person's freedom
  • Thin piece of cloth worn round neck of shirt
  • Piece of wood/metal used to stop something moving
  • verb
  • To attach things (together) with a string or rope
  • To end a game, contest or vote with the same score
  • To require someone to be in a specific place

court

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US / kɔ:t /

UK / kɔrt, kort /

A2
  • noun
  • Place king or queen meet people, makes laws etc.
  • Place where legal cases are decided
  • Large, flat area, to play tennis or basketball
  • verb
  • To act in a way to shows you wish to marry someone
  • To encourage dangerous behavior
  • To pay attention to someone to get their support

mustache

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US / mə'stɑ:ʃ /

UK / ˈmʌsˌtæʃ, məˈstæʃ /

B1
  • noun
  • Hair that grows above the upper lip

work

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US / wɜ:k /

UK / wɚk /

A1
  • adjecitve
  • Activity completed in order to make money
  • noun
  • The product of some artistic or literary endeavor
  • Everything created by an author, artist, musician
  • Activity you do in order to make money
  • Place of employment
  • Final product or result of a some labor or effort
  • verb
  • To bring into a specific state of success
  • To be functioning properly, e.g. a car
  • To do your job in your company or workplace
  • To make an effort to do something
  • To operate a machine or device

device

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US / dɪˈvaɪs /

UK / dɪˈvaɪs /

A2
  • noun
  • Object, machine, or equipment for a specific use
  • Method of doing something; a way

kinetic

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US / kɪˈnetɪk /

UK / kɪˈnɛtɪk, kaɪ- /

C1
  • adjecitve
  • Of or relating to movement

between

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US / bɪˈtwi:n /

UK / bɪˈtwin /

A1
  • preposition
  • From one person, thing, or place, to another
  • In the space that separates two objects
  • Among two or more people who share something

unfortunate

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US / ʌnˈfɔ:tʃənət /

UK / ʌnˈfɔrtʃənɪt /

B1
  • adjecitve
  • Having bad luck; bringing a bad result

bump

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US / bʌmp /

UK / bʌmp /

B1
  • noun
  • Act or sound of one solid object hitting another
  • Raised area on any smooth surface
  • verb
  • To bounce along over a rough surface
  • To knock against with force or violence
  • To move someone to a different group, time or area

nice

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US / naɪs /

UK / naɪs /

A1
  • adjecitve
  • Being attractive or of high quality or value
  • Good or enjoyable
  • Being kind or friendly

engine

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US / 'endʒɪn /

UK / ˈɛndʒɪn /

A2
  • noun
  • Machine that changes energy into mechanical motion
  • The part of a train that pulls railway cars

fast

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US / fɑ:st /

UK / fæst /

A1
  • adjecitve
  • In a way that is difficult to move or change
  • Moving or able to move quickly
  • Showing time that is later than the actual time
  • adverb
  • With a great deal of speed
  • noun
  • Period of time when a person chooses not to eat
  • verb
  • To refuse food for a long time

officer

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US / ˈɒfɪsə(r) /

UK / ˈɔ:fɪsə(r) /

B1
  • noun
  • Person of high position in an organization
  • Person of high position in the military

moment

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US / 'məʊmənt /

UK / 'moʊmənt /

A1
  • noun
  • Very short or brief period of time
  • A particular period in time

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

smoke

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US / sməʊk /

UK / smoʊk /

B1
  • noun
  • Grey gas from fires and cigarettes
  • Fog of air coming from e.g. a cigarette, fire
  • verb
  • To give off a cloud of grey gas from burning
  • To add a taste to food by putting it near a fire
  • To breathe in through a cigarette, etc.

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

next

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US / nekst /

UK / nɛkst /

A1
  • adverb
  • The one that follows another in time or order
  • At a time or place directly after the present one
  • noun
  • The one that follows after
  • adjecitve
  • Immediately after the previous one
  • First occurrence after the present one

could

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US / kəd /

UK / kʊd /

A1
  • other
  • Past form of 'can' to mean have ability
  • Used to ask for something politely, or to offer

shit

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US / ʃɪt /

UK / ʃɪt /

A1
  • noun
  • A coarse term for defecation

dip

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US / dɪp /

UK / dɪp /

B1
  • noun
  • Food or sauce eaten with crackers/raw vegetables
  • Place on surface (e.g. a road) lower than the rest
  • verb
  • To decrease or lower temporarily
  • To put something in and out of a liquid quickly
  • To switch off or lower lights on a car

triangular

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US / traɪˈæŋgjələ(r) /

UK / traɪˈæŋɡjəlɚ /

B1
  • adjecitve
  • Having three straight sides
  • Having three parts

outer

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US / ˈaʊtə(r) /

UK / ˈaʊtɚ /

A1
  • adjecitve
  • Far away
  • Being farther away from the center
  • On or around something; away from the center

his

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US / hɪz /

UK / hɪz /

A1
  • pronoun
  • Something belonging to a male person

plank

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US / plæŋk /

UK / plæŋk /

B2
  • noun
  • Long, thick board used when building something

low

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US / ləʊ /

UK / lo /

A1
  • adjecitve
  • Having a small quantity, supply, or amount
  • Being unhappy or unpleasant in attitude
  • Not high; being near the ground, or bottom
  • (Of a voice, sound) being soft; quiet
  • noun
  • Situation of not having a lot of something

mind

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US / maɪnd /

UK / maɪnd /

A1
  • noun
  • One's opinion or way of thinking about something
  • Part of humans that allows us to think or feel
  • verb
  • To be bothered or upset by something
  • To take care of someone e.g. as a bodyguard

part

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US / pɑ:t /

UK / pɑ:rt /

A1
  • adjecitve
  • To some degree; half; not fully
  • noun
  • Division of a book
  • Ratio of something, e.g. 3 of gin, 1 of tonic
  • A line in a person's hair, made with a comb
  • Character an actor plays on stage, movie, or TV
  • Some, but not all of a specific thing
  • Role in causing something to happen
  • verb
  • To make a line in a person's hair, by using a comb
  • To move two things apart creating a space
  • To leave someone, or to break off a relationship

tyson

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US / ˈtaɪsən /

UK / /

A1

equilateral

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US / ˌi:kwɪ'lætərəl /

UK / ˌikwəˈlætərəl, ˌɛkwə- /

C2
  • noun
  • Math figure whose sides are all equal

know

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US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

insane

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US / ɪnˈseɪn /

UK / ɪnˈsen /

B2
  • adjecitve
  • Mentally ill; crazy
  • Being mentally disturbed
  • Being crazy or stupid

behind

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US / bɪˈhaɪnd /

UK / bɪˈhaɪnd /

A1
  • adjecitve
  • Concerning a later or slower time than expected
  • Being in a losing position in a sporting event
  • Being in the past; old fashioned
  • adverb
  • Remaining
  • noun
  • The part of the body that one sits on
  • preposition
  • At or toward the back of someone or something
  • Supporting or helping someone

car

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US / kɑ:(r) /

UK / kɑr /

A1
  • noun
  • A vehicle with wheels and engine to carry people

sixty

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US / 'sɪkstɪ /

UK / ˈsɪksti /

A1
  • number
  • 60

history

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US / 'hɪstrɪ /

UK / ˈhɪstəri /

A2
  • noun
  • Established pattern or record
  • Study of past events as an academic subject

notice

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US / 'nəʊtɪs /

UK / ˈnotɪs /

A1
  • noun
  • Time by when you must leave, e.g. if you are fired
  • Paper with an announcement, e.g. pinned to a board
  • verb
  • To become aware by sight, touch, or hearing

center

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US / 'sentə /

UK / ˈsɛntɚ /

A1
  • noun
  • Community place people go health or social reasons
  • Place in the middle of something
  • Person or thing that is attracting attention
  • verb
  • To direct focus toward something

steady

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US / 'stedɪ /

UK / ˈstɛdi /

B2
  • adjecitve
  • Happening or developing at a regular rate
  • Continuing without stopping or changing over time
  • Firmly fixed or supported; not likely to fall over
  • noun
  • Your boyfriend or girlfriend
  • verb
  • To make constant, unchanging or staying the same
  • To hold something/someone so they stop moving

per

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US / pə(r) /

UK / pɚ /

A2
  • preposition
  • In the manner directed or suggested
  • For each; during each

why

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US / waɪ /

UK / hwaɪ, waɪ /

A1
  • adverb
  • Question word to ask for a reason
  • exclamation
  • (Used to express surprise or approval)

head

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US / hed /

UK / hɛd /

A1
  • noun
  • Counter for the number of cattle
  • Natural mental ability or intelligence
  • Leader or person with the greatest authority
  • Mind; mental ability; mental state
  • Side of a coin with a head on it
  • Top part of your body with eyes and a mouth
  • Starting point of something, e.g. a river
  • verb
  • To hit a ball with your head in a game
  • To be first or at the front or top (e.g. a list)
  • To travel or move toward a particular place; To go in a particular direction
  • To become the leader of something
  • To lead or be responsible for something

vehicle

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US / ˈvi:əkl /

UK / ˈvi:hɪkl /

A2
  • noun
  • Machine (such as a car) used to carry things
  • Means of expressing, showing, or achieving

though

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US / ðəu /

UK / ðo /

A1
  • adverb
  • Although, despite the fact that

orient

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US / 'ɔ:rɪənt /

UK / ˈɔriənt, -ˌɛnt, ˈor- /

B1
  • noun
  • Area comprising Asia
  • verb
  • To give information about something to newcomers

never

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US / 'nevə(r) /

UK / ˈnɛvɚ /

A1
  • adverb
  • Not ever; not at any time

within

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US / wɪˈðɪn /

UK / wɪðˈɪn, wɪθ- /

A1
  • adverb
  • Inside the limits of an area, time or range
  • preposition
  • From the inside of something

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

correct

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US / kə'rekt /

UK / kəˈrɛkt /

A2
  • adjecitve
  • Being suitable and appropriate for an occasion
  • True or accurate
  • verb
  • To fix a problem
  • To write marks on a piece of work to show mistakes
  • To punish in order to improve

amazing

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US / ə'meɪzɪŋ /

UK / ə'meɪzɪŋ /

A2
  • adjecitve
  • Surprising in a pleasing way
  • verb
  • To cause wonder; to surprise completely

awesome

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US / 'ɔ:səm /

UK / ˈɔsəm /

B2
  • adjecitve
  • Great; wonderful; stupendous

land

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US / lænd /

UK / lænd /

A1
  • noun
  • Region or country
  • Earth; the ground
  • verb
  • To arrive or cause a boat to arrive at the shore
  • To obtain or get something that you wanted
  • To (cause to) come down to the ground safely
  • To cause to arrive in a specific place or state

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

tower

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US / 'taʊə(r) /

UK / ˈtaʊɚ /

A2
  • noun
  • Tall, narrow building
  • Tall metal structure for broadcasting, or the view
  • verb
  • To be very good at something

hour

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US / 'aʊə(r) /

UK / aʊr /

A1
  • noun
  • 60 minutes
  • Particular time of the day
  • Fixed, regularly occurring time

just

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US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

stuff

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US / stʌf /

UK / stʌf /

A1
  • noun
  • Generic description for things, materials, objects
  • verb
  • To push material inside something, with force

object

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US / 'ɒbdʒɪkt /

UK / ˈɑbdʒɪkt /

A2
  • noun
  • Something you can see or touch, but is not alive
  • Goal or purpose of a particular plan or activity
  • The thing that the action of a verb acts upon
  • verb
  • To disagree; to protest against an idea or plan

math

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US / mæθ /

UK / mæθ /

A2
  • noun
  • Study or science of numbers and shapes

talk

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US / tɔ:k /

UK / tɔk /

A1
  • noun
  • Style of speaking
  • Discussion between two countries
  • Giving information in front of people; lecture
  • Saying things or ideas to someone with words
  • verb
  • To make a formal speech about something
  • To say things or ideas to someone with words

sorry

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US / ˈsɒri /

UK / ˈsɑ:ri /

A1
  • exclamation
  • What you say to admit you were wrong
  • adjecitve
  • Causing others to feel pity; poor
  • Feeling regret or sympathy about wrong thing

middle

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US / 'mɪdl /

UK / ˈmidl /

A1
  • adjecitve
  • Equal distance from extremes
  • noun
  • Place that is halfway between two things

report

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US / rɪ'pɔ:t /

UK / rɪˈpɔrt, ˈport /

A1
  • noun
  • Account of the necessary facts and information
  • The telling of news in the media
  • Official statement about something
  • verb
  • To submit a report or bill to the government
  • To write in a newspaper or speak on a news program
  • To state something officially
  • To officially present yourself to an authority
  • To describe something by telling it to others

extend

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US / ɪkˈstend /

UK / ɪkˈstɛnd /

A2
  • verb
  • To offer something (help, friendship) to someone
  • To reach from one point to another
  • To straighten or stretch something out, e.g. leg
  • To make something last longer

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

fact

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US / fækt /

UK / fækt /

A1
  • noun
  • Something that is known or proved to be true

exact

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US / ɪɡ'zækt /

UK / ɪɡˈzækt /

A2
  • adjecitve
  • Completely correct; accurate; specific
  • verb
  • To get something, sometimes using force

somewhere

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US / 'sʌmweə(r) /

UK / ˈsʌmˌhwɛr, -ˌwɛr /

A1
  • adverb
  • At or to an unknown or unnamed place

send

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US / send /

UK / sɛnd /

A1
  • verb
  • To cause to behave or respond in a particular way
  • To cause mail or packages to go to another place
  • To move something quickly in a particular way
  • To give information or greetings to someone

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

water

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US / 'wɔ:tə(r) /

UK / ˈwɔtɚ, ˈwɑtɚ /

A1
  • noun
  • Clear liquid that forms the seas, rivers and rain
  • Large area such as an ocean or sea
  • verb
  • (Of the eyes) to produce tears
  • (Mouth) to become wet at the thought of nice food
  • To pour liquids onto a plant to keep it alive

microwave

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US / ˈmaɪkrəweɪv /

UK / ˈmaɪkrəˌwev /

B1
  • noun
  • Cooking appliance using electromagnetic waves
  • Concerning electromagnetic radiation
  • verb
  • To heat or cook something in a microwave

track

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US / træk /

UK / træk /

A2
  • noun
  • A circular course for running
  • Course or way someone takes, e.g. in education
  • Path in a field or a forest made by walkers
  • Often circular course laid out for car racing
  • One of multiple musical recordings on an album
  • Band surrounding the wheels of a tank
  • Metal lines that trains ride on
  • verb
  • To use marks to follow a wild animal
  • To move a certain way/follow a particular course
  • To record and examine the progress of something

thirty

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US / 'θɜ:tɪ /

UK / ˈθə:ti /

A1
  • number
  • 30

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

tell

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US / tel /

UK / tɛl /

A1
  • verb
  • To (strongly) advise a person to do something
  • To be able to guess
  • To say or communicate information to someone
  • To inform, but without speaking; indicate
  • To have a negative effect on someone
  • To order someone to do something; command
  • To recognize something based on certain signs
  • To report something to an authority
  • To explain something or teach someone something

touch

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US / tʌtʃ /

UK / tʌtʃ /

A1
  • noun
  • Certain way of doing that makes something special
  • A small amount of something
  • Feeling of a surface
  • verb
  • To affect feelings, especially by causing sympathy
  • To be next to each other with no space between
  • To get involved with (used in negative)
  • To feel an object with your fingers, etc.

nothing

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US / 'nʌθɪŋ /

UK / ˈnʌθɪŋ /

A1
  • noun
  • Item of little or no value, importance, interest
  • Number or value of zero
  • pronoun
  • Not anything, not a single thing

rail

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US / reɪl /

UK / rel /

B1
  • noun
  • Long thin piece of metal, wood as part of a fence
  • One of two metal tracks along which a train runs
  • verb
  • To complain or object forcefully
  • To give or encircle something with a fence or bar

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

first

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US / fɜ:st /

UK / fɚst /

A1
  • adjecitve
  • 1st; Coming before all others in time or place
  • noun
  • Something that has not happened before
  • Position of the winner of a competition

language

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US / ˈlæŋgwɪdʒ /

UK / ˈlæŋɡwɪdʒ /

A1
  • noun
  • Words or signs used to communicate messages

dig

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US / dɪg /

UK / dɪɡ /

A2
  • verb
  • To move material to create a hole

even

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US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

happen

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US / 'hæpən /

UK / ˈhæpən /

A1
  • verb
  • To take place or occur

interesting

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US / ˈɪntrəstɪŋ /

UK / ˈɪntrɪstɪŋ, -tərɪstɪŋ, -təˌrɛstɪŋ /

A1
  • adjecitve
  • Taking your attention; making you want to know
  • verb
  • To make someone want to know about something
  • To persuade to do, become involved with something

place

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US / pleɪs /

UK / ples /

A1
  • noun
  • Particular location, area or region
  • verb
  • To put someone in a particular type of situation
  • To put something in a certain location or position

she

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US / ʃɪ /

UK / ʃi /

A1
  • pronoun
  • Female person or animal mentioned before
  • (Refers to female person mentioned before)

triangle

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US / ˈtraɪæŋgl /

UK / ˈtraɪˌæŋɡəl /

B1
  • noun
  • Three people connected with each in a relationship
  • A three-sided piece of metal used in orchestras
  • A closed shape with three straight sides

pavement

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US / ˈpeɪvmənt /

UK / ˈpevmənt /

B1
  • noun
  • Surface next to a road for people to walk on

case

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US / keɪs /

UK / kes /

A1
  • noun
  • Container used to carry things, e.g. clothes
  • Set of facts about a crime
  • Set of facts about an event
  • Example or instance of something
  • verb
  • To find out about a place, as in planning to steal

stay

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US / steɪ /

UK / ste /

A1
  • noun
  • Legal order to stop or delay an action
  • Strong rope or wire that supports a ship's mast
  • Period of time spent living in or visiting a place
  • verb
  • To keep trying without giving up
  • To remain in the same place and not move away
  • To spend time visiting a place or someone's home

twice

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US / twaɪs /

UK / twaɪs /

A1
  • adverb
  • Two times

down

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US / daʊn /

UK / daʊn /

A1
  • adjecitve
  • Being sad, sick, or unhappy
  • Not operating, working, or functioning as expected
  • adverb
  • In a sitting or lying position
  • Towards or on the ground, floor, or bottom
  • Written or copied onto a piece of paper or book
  • noun
  • A period of play in American Football
  • The soft, smooth hairs that cover a bird's body
  • preposition
  • Along something's path, course, or direction
  • Going from a higher position to a lower position
  • verb
  • To eat or drink very quickly and without stopping

mazda

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US / ˈmeərəlti /

UK / ˈmeɪərəlti /

A1

energy

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US / 'enədʒɪ /

UK / ˈɛnədʒi /

A2
  • noun
  • Physical or mental strength

physic

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US / 'fɪzɪk /

UK / 'fɪzɪk /

A1
  • noun
  • (Archaic) medicine causing evacuation of the bowels

align

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US / əˈlaɪn /

UK / əˈlaɪn /

B2
  • verb
  • To arrange (e.g. objects) in line with one another

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

everywhere

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US / ˈevriweə(r) /

UK / ˈevriwer /

A1
  • adverb
  • Every place

people

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US / 'pi:pl /

UK / ˈpipəl /

A1
  • noun
  • Persons sharing culture, country, background, etc.
  • Men, Women, Children

right

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US / raɪt /

UK / raɪt /

A1
  • adjecitve
  • Correct or true
  • The south side of you looking at the rising sun
  • adverb
  • Exactly in a place or time
  • Being appropriate for a particular event
  • In a straight or direct manner
  • noun
  • Something you are legally or morally allowed to do
  • Ideal of what is just and good
  • Political view based on conservatism
  • verb
  • To fix something previously wrong or unjust
  • To make upright, as a boat that has turned over

absolutely

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US / ˈæbsəlu:tli /

UK / ˈæbsəˌlutli, ˌæbsəˈlutli /

A2
  • adverb
  • Completely; totally; very

fun

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US / fʌn /

UK / fʌn /

A1
  • adjecitve
  • Amusing and enjoyable
  • noun
  • Enjoyable or amusing quality or feeling

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

yeah

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US / jeə /

UK / ˈjɛə, ˈjæə, jɛ- /

A1
  • exclamation
  • Another way of saying 'yes'

each

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US / i:tʃ /

UK / itʃ /

A1
  • determiner
  • Every one of two or more things
  • pronoun
  • Per one person or thing

great

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US / ɡreɪt /

UK / ɡret /

A1
  • adjecitve
  • Very large in size
  • Very important
  • Very good; fantastic; wonderful
  • adverb
  • Very good; better than before
  • noun
  • Successful and well-admired person

again

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US / ə'ɡen /

UK / əˈɡɛn /

A1
  • adverb
  • One more time, once more

bottom

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US / 'bɒtəm /

UK / ˈbɑtəm /

A2
  • adjecitve
  • Concerning the part under something, e.g. a vase
  • noun
  • The part of your body you sit on
  • Lowest position, often in a company or contest
  • Lowest part of something; part on which it rests
  • Lowest level, part or point of an object
  • The part under something, e.g. a vase
  • verb
  • To hit the lowest part of something

mean

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US / mi:n /

UK / min /

A1
  • adjecitve
  • Being good at
  • Nasty; unkind
  • Not liking to spend money; cheap; stingy
  • noun
  • Average of a set of numbers
  • verb
  • To express a particular idea or thought
  • To intend to do something in particular
  • To have a particular meaning or value

ride

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US / raɪd /

UK / raɪd /

A1
  • noun
  • Machine at an amusement park for riding on for fun
  • Trip on a bicycle or a horse
  • verb
  • To travel in a particular vehicle as a passenger
  • To sit on and control a horse or vehicle

publicly

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US / 'pʌblɪklɪ /

UK / ˈpʌblɪkli /

A2
  • adverb
  • In a way that anyone can see, hear, use or know

anything

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US / ˈeniθɪŋ /

UK / ˈɛniˌθɪŋ /

A1
  • pronoun
  • A thing of any kind

flat

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US / flæt /

UK / flæt /

A2
  • adjecitve
  • Level; even; without curves or bumps
  • Lifeless; lacking energy or vitality
  • adverb
  • In a certain, direct or absolute manner
  • Against a surface without lifting or curving away
  • noun
  • Apartment; set of rooms for living in
  • The smooth or level part of something
  • Musical tone lower than another by a small degree
  • verb
  • To share an apartment with someone

degrasse

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US / ə'təʊn /

UK / əˈton /

A1

real

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US / rɪəl /

UK / ˈriəl, ril /

A1
  • adjecitve
  • Actually existing or happening, not imagined
  • Being important or special

kid

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US / kɪd /

UK / kɪd /

A2
  • adjecitve
  • Made from young goat skin
  • noun
  • Child or young person
  • Young goat
  • verb
  • To make fun of someone in a gentle way; to tease

bob

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US / bɒb /

UK / bɑ:b /

B2
  • noun
  • Person's name
  • verb
  • To move up and down repeatedly

most

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US / məʊst /

UK / most /

A1
  • adverb
  • Very; extremely
  • Greatest possible degree
  • pronoun
  • Nearly all of something

seat

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US / si:t /

UK / sit /

A1
  • noun
  • Place where a government or organization is based
  • A chair or place to sit
  • Official position in an organization
  • Part of a chair on which a person sits
  • verb
  • To have seats available for a number of people
  • To give someone a place to sit down

distance

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US / 'dɪstəns /

UK / ˈdɪstəns /

A2
  • noun
  • Lack of friendliness toward another person
  • Amount of space between two places or things
  • verb
  • To make it clear that you are not involved

react

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US / rɪ'ækt /

UK / riˈækt /

A2
  • verb
  • To change when mixing with other chemicals
  • To behave or make a change in a particular way

chuck

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US / tʃʌk /

UK / tʃʌk /

B2
  • noun
  • Person's name
  • verb
  • To throw carelessly or casually

along

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US / əˈlɒŋ /

UK / əˈlɔ:ŋ /

A1
  • adverb
  • As a companion; taken with someone
  • preposition
  • At a point on a line

closet

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US / 'klɒzɪt /

UK / ˈklɑzɪt, ˈklɔzɪt /

B2
  • adjecitve
  • Secret
  • noun
  • Small room or cupboard used for storing things
  • verb
  • To go or put someone into a room for some privacy

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

righty

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US / 'raɪtɪ /

UK / 'raɪtɪ /

A1
  • exclamation
  • Something we say to show we agree with someone

name

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US / neɪm /

UK / nem /

A1
  • noun
  • What something or someone is called
  • verb
  • To state what someone is called, e.g. John

lie

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US / laɪ /

UK / lai /

A2
  • noun
  • An untrue statement, when you know it is not true
  • verb
  • To be in a horizontal or flat position
  • To say something that you know is not true

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

picture

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US / 'pɪktʃə(r) /

UK / ˈpɪktʃɚ /

A1
  • noun
  • General situation or state of being
  • Mental image of what something is or looks like
  • Movie; film
  • Painting, drawing or photograph on paper or screen
  • verb
  • To understand or imagine something
  • To imagine someone or something in an image

think

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US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

something

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US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

interestingly

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US / ˈɪntrəstɪŋli /

UK / ˈɪntrəstɪŋli /

A2
  • adverb
  • You'll find this surprising; in an interesting way

experiment

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US / ɪk'sperɪmənt /

UK / ɪkˈspɛrəmənt /

A2
  • noun
  • Test performed to assess new ideas or theories
  • verb
  • To create and perform tests to research something
  • To try something new that you haven't tried before

another

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US / əˈnʌðə(r) /

UK / əˈnʌðɚ /

A1
  • adjecitve
  • One more, but not this
  • determiner
  • One more added
  • pronoun
  • One more (thing)

keep

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US / ki:p /

UK / kip /

A1
  • noun
  • Large, strong tower in the middle of a castle
  • Money spent on you so you can live in a place
  • verb
  • To continue doing something; not to stop
  • To stop balls going in a goal in sports
  • To not give back or return something
  • (Of food) to not spoil or not rot
  • To take possession of something to own, e.g. a pet
  • To have and continue to hold something
  • To do something that you have promised or agreed
  • To stay in a certain place or condition
  • To maintain the rules

put

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US / pʊt /

UK / pʊt /

A1
  • phrasal verb
  • to make a light stop shining by pressing or moving a switch
  • verb
  • To move or place a thing in a particular position
  • To rate something in importance or value
  • To write or say something in a certain manner

any

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US / 'enɪ /

UK / ˈɛni /

A1
  • adjecitve
  • One, or some, no matter which
  • pronoun
  • One (thing) of many; some

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

completely

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US / kəmˈpli:tli /

UK / kəmˈpliːtli /

A1
  • adverb
  • In every way or as much as possible

train

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US / treɪn /

UK / tren /

A1
  • noun
  • Line of people, animals moving the same direction
  • Vehicle that carries people and runs on rails
  • Long rear section of a (e.g. wedding) dress
  • Series of events happening one after another
  • verb
  • To teach a pet a behavior or a trick
  • To educate someone in something, e.g. medicine
  • To cause a plant to grow a certain way by cutting
  • To point a certain way or toward something
  • To practice to get better at a thing, e.g. sports

couple

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US / 'kʌpl /

UK / ˈkʌpəl /

A2
  • noun
  • Two people in a romantic relationship
  • Two of something; two people; a pair
  • verb
  • To join something to something else
  • (Two animals) to engage in sexual relations
  • To put two people or things together

come

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US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

wait

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US / weɪt /

UK / wet /

A1
  • verb
  • To delay or not do something until later
  • To spend time until an expected thing happens
  • To remain in a place until a thing happens

sort

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US / sɔ:t /

UK / sɔrt /

A1
  • noun
  • Group or class of similar things or people
  • verb
  • To organize things by putting them into groups
  • To deal with things in an organized way

matter

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US / 'mætə(r) /

UK / ˈmætɚ /

A1
  • noun
  • Material all things are made of that fills space
  • Problem or reason for concern
  • verb
  • To be of great importance; to count

itself

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US / ɪtˈself /

UK / ɪtˈsɛlf /

A1
  • pronoun
  • Referring to it

jesus

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US / ˈdʒi:zəs /

UK / ˈdʒizəs /

A1
  • exclamation
  • An oath used to express irritation, dismay, or surprise.
  • proper noun
  • The central figure of the Christian religion. Jesus conducted a mission of preaching and healing (wi

relate

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US / rɪ'leɪt /

UK / rɪˈlet /

A2
  • verb
  • To demonstrate a logical relationship between
  • To understand or sympathize with, e.g. a problem
  • To tell a story, or tell about a particular event

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

wild

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US / waɪld /

UK / waɪld /

A2
  • adjecitve
  • Living in nature; not tame
  • (Of land) not developed by people
  • adverb
  • In a manner which lacks control
  • noun
  • A natural environment e.g. jungle, forest

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

actually

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US / ˈæktʃuəli /

UK / ˈæktʃuəli /

A1
  • adverb
  • Used to add new (often different) information

popular

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US / ˈpɒpjələ(r) /

UK / ˈpɑ:pjələ(r) /

A1
  • adjecitve
  • Liked or enjoyed by many people

corner

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US / 'kɔ:nə(r) /

UK / ˈkɔrnɚ /

A2
  • noun
  • Place where two lines, sides, corners etc. meet
  • Edges of something, e.g. eyes, boxing ring
  • verb
  • To force into a position impossible to escape from
  • To go around a bend in the road (often by driving)

past

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US / pɑ:st /

UK / pæst /

A2
  • adjecitve
  • No longer current or new
  • adverb
  • So as to go beyond, or further than something
  • noun
  • Time that existed before now, e.g. long ago
  • preposition
  • After a particular time
  • At a later point in distance; beyond

should

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US / ʃʊd /

UK / ʃʊd /

A1
  • other
  • Used to indicate what is proper or reasonable

point

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US / pɔɪnt /

UK / pɔɪnt /

A1
  • noun
  • An item to be discussed
  • Small spot or dot
  • Fact or detail
  • Feature of something
  • The size of the text on a page or screen
  • A certain time or stage in a process
  • Certain position in time or space
  • Idea or fact you try to convince people about
  • Measurement of scores in a game, sport
  • Sharp end of something, e.g. a pen or pin
  • verb
  • To face a certain direction, e.g. north
  • To indicate something with your finger to others

geometry

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US / dʒiˈɒmətri /

UK / dʒiˈɑ:mətri /

B2
  • noun
  • Mathematical study of shapes, surfaces, and space
  • Mathematical shape of something

always

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US / 'ɔ:lweɪz /

UK / ˈɔlwez,-wɪz,-wiz /

A1
  • adverb
  • For a very long time
  • At all times; in every situation
  • For ever

lose

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US / lu:z /

UK / luz /

A1
  • verb
  • To be unable to keep in check or control something
  • To decrease in value or quantity (e.g. weight)
  • To stop having certain qualities or abilities
  • To stop having or being entitled to
  • To fail to win something that is being contested
  • To be unable to find something you once had
  • To be dependent on someone (used with 'not')

imagine

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US / ɪ'mædʒɪn /

UK / ɪˈmædʒɪn /

A1
  • verb
  • To think creatively about; form mental picture of

rim

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US / rɪm /

UK / rɪm /

B2
  • noun
  • Outer edge of something circular
  • Outer part of a wheel of a vehicle
  • verb
  • To give something an outer edge, as specified

side

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US / saɪd /

UK / saɪd /

A1
  • adjecitve
  • In addition to the central or most important thing
  • Next to, or very close to, the right or left of
  • noun
  • Position or opinion that is opposite to another
  • Right or left part of a person's body
  • Feature of someone's personality
  • Straight edge of an object
  • One of two or more groups fighting each other
  • verb
  • To decide to agree with one point, not the other

exactly

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US / ɪgˈzæktli /

UK / ɪɡˈzæktli /

A1
  • adverb
  • No more and no less than; precisely

coupler

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US / 'kʌplə /

UK / 'kʌplə /

A1
  • noun
  • A thing that connects two things, especially mechanical components or systems.

million

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US / ˈmɪljən /

UK / ˈmɪljən /

A1
  • number
  • 1,000,000

many

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US / 'menɪ /

UK / ˈmɛni /

A1
  • determiner
  • Used to refer a large number of things

day

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US / deɪ /

UK / de /

A1
  • noun
  • A period of 24 hours beginning at midnight
  • The period of time when it is light outside
  • Person's name

obviously

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US / ˈɒbviəsli /

UK / ˈɑːbviəsli /

A2
  • adverb
  • In a way that is obvious/easy to see or understand

use

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US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

once

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US / wʌns /

UK / wʌns /

A1
  • adverb
  • One time; one instance
  • At a time in the past
  • conjunction
  • When; as soon as

weird

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US / wɪəd /

UK / wɪrd /

B1
  • adjecitve
  • Odd or unusual; surprising; strange

chassis

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US / ˈʃæsi /

UK / ˈʃæsi, ˈtʃæsi /

C1
  • noun
  • Supporting frame of a structure, esp. a car

already

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US / ɔ:lˈredi /

UK / ɔlˈrɛdi /

A1
  • adverb
  • Having happened or been done before this time

wheel

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US / wi:l /

UK / wi:l /

A2
  • noun
  • Round thing that rolls, used for moving things
  • verb
  • To move something which has wheels or is on wheels
  • To turn or cause to turn something in a circle

develop

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US / dɪ'veləp /

UK / dɪˈvɛləp /

A1
  • verb
  • To explain something in steps and in detail
  • To create or think of something
  • To grow bigger, more complex, or more advanced
  • To make a photograph from film

maybe

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US / ˈmeɪbi /

UK / ˈmebi /

A1
  • adverb
  • Possibly but not certainly; perhaps

attach

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US / ə'tætʃ /

UK / əˈtætʃ /

A2
  • verb
  • To be associated or connected with

zero

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US / ˈzɪərəʊ /

UK / ˈzɪroʊ /

A1
  • noun
  • Temperature when water turns to ice
  • number
  • Number 0
  • verb
  • To set a scale or other device to show 0

convex

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US / ˈkɒnveks /

UK / ˈkɑ:nveks /

C1
  • adjecitve
  • Having a surface that curves outward like a ball

same

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US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

record

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US / 'rekɔ:d /

UK / ˈrekərd /

A1
  • noun
  • Highest or most extreme level achieved
  • Round plastic disc on which music has been stored
  • History of a person's past actions or achievements
  • verb
  • To indicate a temperature, speed, etc.; register
  • To write down or say what happened
  • To put music, sounds onto a device to store it

configure

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US / kənˈfɪgə(r) /

UK / kənˈfɪgjər /

B2
  • verb
  • To construct or arrange in a certain way

seriously

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US / ˈsɪəriəsli /

UK / ˈsɪriəsli /

B1
  • adverb
  • Involving or requiring great thought or study
  • Subtitles section
  • Chuck.
  • Yes.
  • I got a fast one for you.
  • All righty.
  • This one is going to be about wheels.
  • I'm going to say I'll say a bit pedestrian for you.
  • OK.
  • Would it be any more pedestrian than Water Tower?
  • Oh, good point.
  • That went viral.
  • Still the most popular one of these that we've done, I think.
  • Would have never thought that one would have landed the way it did.
  • A couple million people were just like, water towers, man.
  • Gotta know about the water towers.
  • This is amazing.
  • Five million views.
  • I know, that's right.
  • Oh my God, water towers.
  • So maybe the wheels will do the same thing.
  • You ready?
  • Okay.
  • Did you know
  • that, if you're driving down the road, pick a speed, sixty miles an hour.
  • Nah, that ain't me.
  • Okay, whatever, sorry.
  • You gotta bump that up by about twenty five miles, and now we talking.
  • At whatever speed you're going, there is a part of your car that is going forward at zero miles per hour.
  • at all times.
  • All right.
  • This already got interesting because I have no idea what you're talking about right now.
  • There's another part of your car that's going forward at twice that speed at every moment.
  • Oh, God.
  • Okay.
  • What?
  • Jesus.
  • Okay.
  • All right.
  • Okay.
  • You ready?
  • Okay.
  • Are you seated?
  • All right.
  • Okay.
  • Here we go.
  • Here we go.
  • Okay.
  • It's all happening in your wheels.
  • So the part of the wheel at any moment that's in contact with the pavement is not moving at all.
  • That's right.
  • Damn.
  • No, if your car were skidding, then the part of the wheel in contact with the road would be moving forward.
  • Would be moving forward.
  • At the rate you're skidding forward.
  • But that's why you're moving forward.
  • It's why you're moving forward.
  • It's why you're moving forward.
  • Because part of the wheel is not moving at all.
  • Exactly, because if it were, you'd be spinning in place.
  • You'd be spinning in place.
  • Correct.
  • By the way, OK.
  • Now, you know what, man?
  • You did it again.
  • You did it again.
  • No, stop.
  • Because I'm going to let you know.
  • I'm just saying.
  • No, I've got to say, first of all, this is what I'm going to do right now.
  • I'm going to publicly apologize to you for all that shit I was thinking.
  • Let me tell you something.
  • I was thinking some stuff.
  • I'm apologize to you right now.
  • Cause you were like, all right, Chuck, we're going to talk about wheels.
  • I'm like this brother done lost his damn mind.
  • We're going to talk about wheels.
  • Seriously?
  • You did it.
  • Go ahead.
  • Let's go for it.
  • Let's keep going.
  • Let's keep going.
  • So the center of the wheel, which is spinning, but the exact center is going forward at the same speed the car is.
  • Absolutely.
  • The top of the wheel is going forward at twice the speed of the car.
  • Twice the speed of the car.
  • Just like a real car.
  • At twice the speed.
  • Right.
  • Okay, because notice if the chassis of the car is moving at the speed of the car obviously The top of the wheel is moving faster than the chassis, right?
  • Okay
  • Past the top of the wheel well.
  • The top of the wheel well is going forward at your speed, at your speedometer speed.
  • The top of the wheel is going faster than that to come around to the bottom so that it's not moving at all.
  • And if you run the math on that, you get zero at the bottom, the speed of the car in the middle of the wheel, and twice the speed of the car at the top of the wheel.
  • And so this is the geometry, the math and the physics of an axled wheel on any moving vehicle.
  • What are you doing?
  • Chuck is smoking something.
  • I'm just saying, I'm ready to talk about this all day.
  • Chuck is smoking, okay.
  • But wait, there's more.
  • That's awesome.
  • That is awesome.
  • But wait, there's more.
  • Because I'm picturing a dot on the wheel and a dot at the chassis.
  • And then it comes up, it has to go faster than the top.
  • Has to go faster.
  • So it could come around.
  • And then the top of the wheel well.
  • That's right.
  • So that it can come around, correct.
  • So now think of the wheel that's on a train.
  • There's the metal flat part that touches the metal rails.
  • But then there's another part, it's like a coupler.
  • There's an outer part that extends outside of the track.
  • Can you picture this?
  • It's not just rolling on a track.
  • It's like a lip.
  • Like a lip on the wheel itself.
  • It's a lip that extends outside of the track, which enables the train to stay on the track.
  • Otherwise, it'll just drive off, right?
  • So these lips that are exterior to the wheels keep the train aligned on the track.
  • Right.
  • But here's what's interesting.
  • They dip below the contact point of the wheel and the rail.
  • Correct.
  • by a little bit, but whatever it is, they dip below.
  • Well, if the top of your wheel is going twice the speed, the center of the wheel is going the speed, the bottom of the wheel is going zero, anything lower than the bottom of the wheel is moving backwards.
  • Oh, snap.
  • That's right.
  • Okay.
  • Okay.
  • It's going in reverse.
  • It's going reverse.
  • So for any train, there are parts of that train that are moving backwards on the track at all times.
  • That's pretty wild.
  • Just picture that.
  • There's the wheel rolling.
  • The part that's below the contact point is moving backwards.
  • It actually lands in a place behind where it started.
  • That means it moved backwards.
  • That's right.
  • That's insane.
  • So I just thought I'd put that out there.
  • I know it's nothing deeper than that.
  • The next time I tie up a woman and put her on the tracks, I'm going to let her know that you're going to learn something.
  • Is this what you do, Chuck?
  • Okay.
  • As I twirl my mustache.
  • Now, here's something interesting.
  • Are you ready?
  • So, that means there's a part of your car that's going at all speeds from zero up to twice the speed of the car, correct?
  • That's right.
  • Okay.
  • So, imagine this.
  • Imagine attaching some device to your wheel
  • that sends out a microwave signal, and you can adjust it up or down, okay, from the center of the wheel to the outer rim, and sends out, or from the center of the wheel to the bottom, sends out a microwave signal that will report a speed of your car at any speed you choose.
  • So the police officers there with the radar gun, with the return signal,
  • that's going thirty miles an hour even though you're going sixty.
  • They'll get the reflected signal off of your car, right?
  • But if you can override that with a more powerful signal sent from your wheels, you can broadcast any speed you choose down to zero if it's attached to the wheel.
  • Right.
  • That's the speed I'm choosing, by the way.
  • Well, you can't do zero because they know you're lying.
  • Well, that's what I am.
  • Any place between the center of the wheel and the bottom.
  • Bottom of the wheel.
  • You can broadcast a speed of that spinning wheel at any speed less than your actual driving speed.
  • To configure this would be really weird and how to make that happen because it has to be moving with the tire.
  • I don't know how you would design the engineering of that, but it's just something to think about.
  • because there's always a part of your car that's going everywhere from the speed of your car down to zero and up to twice the speed of the car.
  • Well, maybe when the cop pulls you over, you can just tell him, I don't know what speed you recorded, but I don't know, you should have been looking at the bottom of my wheels.
  • Yeah, that'll work in court.
  • So that's all I have to say about wheels.
  • That was pretty damn good.
  • I mean, sorry, pardon my language.
  • That was pretty doggone good.
  • Now there's a Completely surprised, taken aback by this one.
  • Yeah, and there's another kind of wheel, which is the shape of the object that rotates within a Wankel engine.
  • So if you imagine an equilateral triangle, but curve the corners of it and make the sides a little bit convex, right?
  • So it's a triangle.
  • I had a Mazda once.
  • Oh, you did?
  • With a Wankel engine?
  • Yeah, I had a Mazda.
  • So that shape, interestingly,
  • the distance from the bottom to the top remains the same no matter how it's oriented.
  • So, if you roll it along the I made one of these shapes.
  • In fact, I don't have one with me here.
  • We might have to do another explainer.
  • We used to call them spirographs when I was a kid.
  • Okay, yeah, so they're related.
  • They're related geometry to it.
  • So if you take a plank and place it on top of one of these triangular shapes and roll it, the plank will be absolutely steady, even though it looks like the thing is bobbing up and down.
  • It's because there's no central axle to it.
  • Right.
  • Okay, we think a wheel that gives you a smooth ride needs one central axle because a wheel is the same distance to each point on the rim.
  • You can design a shape where the top is always the same distance from the bottom even though the center is moving in your spirographian sort of way.
  • Nice.
  • So I actually built one of these when I was a kid in woodshop in seventh grade.
  • And I don't think it's with me here.
  • It's in a closet somewhere.
  • I'm going to have to dig it up and we'll do another one.
  • Just fun things to do with a Wankel engine.
  • Nice.
  • Yeah.
  • It's an unfortunate name, but yeah.
  • I know, right?
  • It's a little weird.
  • It is a little weird.
  • But it's one of the many engines that have been developed over the years to convert chemical energy into kinetic energy.
  • I know.
  • We'll do an explainer just on engines and the history of engines.
  • Oh, that's a great one.
  • Why they differ from each other and where they're headed.
  • That's a good one.
  • That's a good one.
  • And now you know that part of your car ain't moving at all.
  • But don't use that as the excuse when you get pulled over.
  • That's it.
  • That's it.
  • Or don't experiment with how the cop will react if you give that as an excuse.
  • Right.
  • You don't want to experiment.
  • All right, Chuck, we got to call it quits there.
  • All right.
  • It's been another explainer.
  • This one's on wheels.
  • In case you never knew.
  • Chuck, always good to have you there.
  • Always a pleasure.
  • Neil deGrasse Tyson here for Starcom.
  • Keep looking up.