[quart] n [ME, one fourth of a gallon, fr. MF quarte, fr. OF, fr. fem. of quart, adj., fourth, fr. L quartus; akin to L quattuor four--more at four] (14c) 1: any of various units of capacity as: a: a British imperial liquid or dry unit equal to 1/4 imperial gallon or 69.335 cubic inches b: a U.S. liquid unit equal to 1/4 gallon or 57.75 cubic inches c: a U.S. dry unit equal to 1/32 bushel or 67.201 cubic inches
2: a vessel or measure having a capacity of one quart