n. A vessel or cask of a cylindrical form, generally bulging in the middle, usually made of wooden staves bound together with hoops, and having flat parallel heads.n. As a measure of capacity, the quantity of anything, liquid or solid, which a barrel should contain.n. The contents of a barrel: sometimes, like bottle, used to signify intoxicating drink.n. The money (especially when the sum is large) supplied by a candidate in a political campaign, for campaign expenses, but especially for corrupt purposes: hence, a barrel campaign is one in which money is lavishly employed to bribe voters: in this sense often written and pronounced bar'l (bärl), in humorous imitation of vulgar speech.n. Anything resembling a barrel; a drum or cylinder.To put or pack in a barrel or barrels: as, to barrel beef, pork, or fish.n. In mining, a vessel by which water is lifted by engine or windlass from a sinking-shaft.