Definition

noun

A more or less cylindrical vessel for liquids, usually of steel or aluminium, but sometimes of plastic, and with a carrying handle over the top.
A container used to carry and dispense water for plants (a watering can).
A tin-plate canister, often cylindrical, for preserved foods such as fruit, meat, or fish.
A chamber pot, now a toilet or lavatory.
“Bob's in the can. You can wait a few minutes or just leave it with me.”
Buttocks.

verb

To seal in a can.
“They canned air to sell as a novelty to tourists.”
To preserve by heating and sealing in a jar or can.
“They spent August canning fruit and vegetables.”
To discard, scrap or terminate (an idea, project, etc.).
“He canned the whole project because he thought it would fail.”
To shut up.
“Can your gob.”
To fire or dismiss an employee.
“The boss canned him for speaking out.”