A measure of capacity, containing four quarts; -- used, for the most part, in liquid measure, but sometimes in dry measure.
- A unit of volume in the U.S. Customary System, used in liquid measure, equal to 4 quarts (3.785 liters).
- A unit of volume in the British Imperial System, used in liquid and dry measure, equal to 4 quarts (4.546 liters). See Table at measurement.
- A container with a capacity of one gallon.