Carboy
A large glass or plastic bottle of 2 gallon capacity or more, with or without handles, and sometimes fitted with a spigot or plastic tubing at the bottom for drainage. Carboys are usually 3, 5 or 6 gallons, but the author has seen all of the following: 2 gallon, 2.2 gallon, 2.5 gallon, 2.8 gallon, 3 gallon, 5 gallon, 6 gallon, 6.5 gallon, and 7 gallon.
See also: demijohn.