noun

1. A more or less cylindrical vessel for liquids, usually of steel or aluminium.
2. A container used to carry and dispense water for plants (a watering can).
3. A tin-plate canister, often cylindrical, for preserved foods such as fruit, meat, or fish.
4. (context, US, euphemism) toilet, bathroom.
5. (context, US, euphemism) buttocks.
6. (slang) headphones

verb (inf=-, can, -, could, couth (obsolete except in adjective use))

1. (context, obsolete, transitive) To know.
2. (context, modal auxiliary verb, defective) To know how to; to be able to.

She speak English, French, and German.

I play football.

Can you remember your fifth birthday?

1. (context, modal auxiliary verb, defective, colloquial) may, May; to be permitted or enabled to.

You go outside and play when you're finished with your homework.

Can I use your pen?

verb

1. (archaic) Second-person singular simple present form of can.

Canst thou show me the way?

verb

1. (present participle of, consider)

verb

1. (simple past of, can
   1. Etymology 1, can
   )