barrel in Polish

(countable) A round (cylindrical) vessel, such as a cask, of greater length than breadth, and bulging in the middle, made of staves bound with hoops, and having flat ends (heads). The word is sometimes applied to a similar cylindrical container made of metal, usually called a drum.

The quantity which constitutes a full barrel: the volume or weight this represents varies by local law and custom.

A metallic tube, as of a gun, from which a projectile is discharged.