Definition of quart

• n. - The fourth part; a quarter; hence, a region of the earth.
• n. - A measure of capacity, both in dry and in liquid measure; the fourth part of a gallon; the eighth part of a peck; two pints.
• n. - A vessel or measure containing a quart.
• n. - In cards, four successive cards of the same suit. Cf. Tierce, 4.