A small barrel, typically holding less than 30 gallons, used for storing liquids such as beer. The pub ordered a new keg of ale for the weekend crowd.
A unit of measure for beer, equivalent to half a barrel or 15.5 gallons in the United States. They bought a keg for the party to ensure there was enough beer for everyone.
A unit of capacity equal to 10 imperial gallons in the United Kingdom, chiefly used for alcoholic drinks such as beer or cider. The recipe called for a full keg—ten imperial gallons—of strong cider.