canister

A usually cylindrical storage container, especially:

1. A box or can of thin metal or plastic used for holding dry foodstuffs or cooking ingredients, such as flour or sugar.

2. A small plastic container used for storing a roll of film.

3. A metal container that holds pressurized gas, as one containing tear gas that explodes on impact or one containing oxygen as part of a breathing apparatus.

4. A metallic cylinder packed with shot that scatter upon discharge from a cannon, formerly used as an antipersonnel round.

5. Such cylinders, or the shot used in such cylinders, considered as a group.

1. A metallic cylinder packed with shot that scatter upon discharge from a cannon, formerly used as an antipersonnel round.

2. Such cylinders, or the shot used in such cylinders, considered as a group.

The part of a gas mask that contains the filter for removing toxic agents from the air.