canister /'kaenista(r); 'kaemstw/ n 1 small box (usu metal) with a lid, used for holding tea, etc. 用以裝茶葉等之有蓋的小罐 (通常為金屬的); 茶罐; 茶筒。 2 cylinder which, when thrown, or fired from a gun, bursts and scatters its contents: 霰彈筒 (手扔或以槍炮發(fā)射，爆炸時其中破片等飛散)： a 'tear-gas ~. 催淚毒氣彈筒。