canister canister /ˈkænɪstɝ/

noun

1. Metal container for storing dry foods such as tea or flour  ( canister , cannister , tin )
   metal container for storing dry foods such as tea or flour
   
   
2. A metallic cylinder packed with shot and used as ammunition in a firearm  ( canister , canister shot , case shot )
   a metallic cylinder packed with shot and used as ammunition in a firearm