Meaning

noun a tube through which a bullet travels when a gun is fired

noun a cylindrical container that holds liquids

noun a bulging cylindrical shape; hollow with flat ends

originEtymology tree Old French barilbor. Middle English barel English barrel From Middle English barel, from Anglo-Norman baril, Old French baril, bareil (“barrel”), of uncertain origin. An attempt to link baril to Old French barre (“bar, bolt”) (compare Medieval Latin barra (“bar, rod”)) via assumed Vulgar Latin *barrīculum meets the phonological requirement, but fails to connect the word…

Etymology from Wiktionary, CC BY-SA 3.0