rundlet

A small barrel; a unit of capacity, equal, according to statutes of 1439 and 1483, to 18 1/2 gallons, but in modern times usually reckoned at 18 gallons.

A small barrel of no certain dimensions. It may contain from 3 to 20 gallons, but it usually holds about 141/2 gallons.

A small barrel of no certain dimensions, which may contain from 3 to 20 gallons.

A measure for liquids, as for wine, usually 18.5 gallons.