Quart

The quart is a unit of volume equal to a quarter of a gallon. Three kinds of quarts are currently used: the liquid quart and dry quart of the US customary system and the imperial quart of the British imperial system. It is divided into two pints or four cups. Historically, the size of a quart has varied with the different values of gallons over time, and in the case of the dry quart, in reference... (Wikipedia)