a measure of capacity, being the quarter or 4th part of some other measure. The English quart is the 4th part of the gallon, and contains two pints. The Roman quart, or quartarius, was the 4th part of their corgius. The French, besides their quart or pot of two pints, have various other quarts, distinguished by the whole of which they are quarters; as quart de maud, and quart de boisseau.