can

1 of 5

verb (1)

kən,

ˈkan 

 also  ˈken;

 dialectal  ˈkin

past could

kəd,

ˈku̇d  ; present singular & plural can

auxiliary verb

1

a

: be physically or mentally able to

He can lift 200 pounds.

b

: know how to

She can read.

c

—used to indicate possibility

Do you think he can still be alive?

Those things can happen.

—sometimes used interchangeably with may

d

: be inherently able or designed to

everything that money can buy

e

: be enabled by law, agreement, or custom to

Congress can declare war.

f

: be permitted by conscience or feeling to

can hardly blame her

g

: be made possible or probable by circumstances to

He can hardly have meant that.

h

: be logically or axiologically able to

2 + 2 can also be written 3 + 1.

2

: have permission to

—used interchangeably with may

You can go now if you like.

transitive verb

1

archaic : to be able to do, make, or accomplish

2

obsolete : know, understand

intransitive verb

archaic : to have knowledge or skill

Can vs. May: Usage Guide

Can and may are most frequently interchangeable in uses denoting possibility; because the possibility of one's doing something may depend on another's acquiescence, they have also become interchangeable in the sense denoting permission. The use of can to ask or grant permission has been common since the 19th century and is well established, although some commentators feel may is more appropriate in formal contexts. May is relatively rare in negative constructions (mayn't is not common); cannot and can't are usual in such contexts.

can

2 of 5

noun

ˈkan 

plural cans

1

: a usually cylindrical receptacle:

a

: a container (as of tinplate) in which products (such as perishable foods) are hermetically sealed for preservation until use

a can of beans

b

: a usually metal typically cylindrical receptacle usually with an open top, often with a removable cover, and sometimes with a spout or side handles (as for holding liquid or trash)

c

: a jar for packing or preserving fruit or vegetables

d

: a vessel for holding liquids

specifically : a drinking vessel

… in his hand did bear a boozing can …

—Edmund Spenser

e

: a recessed lighting fixture

Augment natural light with recessed cans in the ceiling, sconces on side walls, or a table lamp on a shelf …

—Jill Connors

2

informal : buttocks

He needs a kick in the can.

3

informal

a

: toilet

sitting on the can

b

: bathroom sense 1

He locked himself in the can and wouldn't come out.

4

informal : jail

The cops threw him in the can.

5

slang : destroyer sense 2

served on a can during the battle

6

informal : headphone

—usually plural

You don't realize just how noisy it is inside a plane until you put on a good pair of noise-cancelling headphones … . I generally leave the noise-cancelling cans on even when I'm not listening to anything at all—the relative quiet makes a long trip less stressful.

—Steven Morgenstern

canful

ˈkan-ˌfu̇l 

noun

can

3 of 5

verb (2)

ˈkan 

canned; canning

transitive verb

1

a

: to put in a can : preserve by sealing in airtight cans or jars

can tomatoes

b

: to hit (a golf shot) into the cup

c

: to hit (a shot) in basketball

2

: to discharge from employment

got canned for being late so often

3

slang : to put a stop or end to

were told to can the chatter

canner noun

can

4 of 5

abbreviation (1)

1

canceled; cancellation

2

cannon

3

canto

Can

5 of 5

abbreviation (2)

variants or Canad

Canada; Canadian

Phrases

in the can

of a film or videotape : completed and ready for release

Synonyms

Noun

• barrel
• drum
• tin

Verb (2)

• stop
• cease
• halt
• end
• quit

Examples of can in a Sentence

Noun

He ate the whole can of beans.

the shelter stores huge cans of water for an emergency

Verb (2)

can the chatter, or I'm kicking you out of this library

the cashier was summarily canned for stealing from the registers

Recent Examples on the Web

Noun

So your doctor may test how far your can flex and extend your hips. —Bruce Y. Lee, Forbes.com, 1 July 2025

On trash pickup days, cans should be set out the morning of, not the night before, officials said. —Helena Wegner, Idaho Statesman, 27 June 2025

Saleem said a can of Zyn pouches that might cost $4.50 now will likely go up to $6.50. —Jeremy Gorner, Chicago Tribune, 23 June 2025

Seal garbage tightly in bags, and rinse out bottles and cans before placing in recycling bins. —Arricca Elin Sansone, Southern Living, 18 June 2025

Word History

Etymology

Verb (1)

Middle English (1st & 3rd singular present indicative), from Old English; akin to Old High German kan (1st & 3rd singular present indicative) know, am able, Old English cnāwan to know — more at know

Noun

Middle English canne, from Old English; akin to Old High German channa

First Known Use

Verb (1)

before the 12th century, in the meaning defined at transitive sense 2

Noun

before the 12th century, in the meaning defined at sense 1

Verb (2)

1855, in the meaning defined at sense 1a

Phrases Containing can

• all one can do
• all (that) one can do
• as best one can
• as far as the eye can see
• as far/near as I can tell
• ash can
• (as) near as someone can tell/figure
• as/so far as one can see/tell/judge
• before one can blink
• bite off more than one can chew
• can be forgiven
• can/could do without
• can-do
• can hardly wait
• can it
• can make nothing of
• can of worms
• can opener
• can take a joke
• (can) trace one's history (back) to
• carry the can
• catch-as-catch-can
• for as long as one can remember
• garbage can
• how can/could
• I (can) promise you
• in the can
• jerry can
• looks can be deceiving/deceptive
• more than someone can shake a stick at
• no can do
• one (can) bet one's ass
• open a can of worms
• shit-can
• spray can
• the can
• the least someone can do
• tin can
• trash can
• walk before one can run
• watering can
• where can (someone) (possibly) be
• who can tell
• you can say that again

Rhymes for can

• an
• ban
• bran
• cann
• clan
• duan
• fan
• flan
• gran
• jann
• klan
• lan

Kids Definition

can

1 of 3 helping verb

kən 

(ˈ)kan

past could kəd 

(ˈ)ku̇d

; present singular & plural can

1

a

: know how to

we can read

b

: be able to

I can hear you

c

: be permitted by conscience or feeling to

they can hardly blame you

d

: have the power or right to

2

: have permission to : may

you can go now

can

2 of 3 noun

ˈkan 

1

: a metal container usually shaped like a cylinder

a soda can

2

: the contents of a can

ate the whole can of beans

can

3 of 3 verb

ˈkan 

canned; canning

1

: to prepare for future use by sealing in an airtight can or jar

can tomatoes

2

: to dismiss from a job : fire

3

slang : to put a stop or end to

told to can the chatter

canner noun

Etymology

Helping verb

Old English can "to know, know how to"

Noun

Old English canne "container"