barrel (subs.) Copy link Outline I. A kind of cask, ligneum vas circulis cinctumII. A tube1. tūbus2. fistŭlaIII. A cylinder • barrel (subs.): I. A kind of cask, ligneum vas circulis cinctum: Plin. 14, 21, 27. II. A tube: 1. tūbus: a gun-b., *sclōpēti tubus: v. tube. 2. fistŭla: v. bore. III. A cylinder: cy̆lindrus or (?) fūsus: the b. of a watch, *horologii c. or f.: M. L.