Canister
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The term canister originally referred to a basket of woven reeds but is now commonly used to refer to any container that is roughly cylindrical in shape. The abbreviated form can refers more specifically to a metal canister. Canister is still widely used as a term for 35mm film containers, pods used for parachute supply drops and gas containers used for riot control.
A canister is also a cylindrical shaped bell worn by sheep, that was traditionally used in Sussex, England, especially on the South Downs.
"Canister" is also a synonym for canister shot or case-shot, which were types of artillery rounds used in warfare as anti-personnel ammunition.