Source : Webster's Revised Unabridged Dictionary (1913)

Quart \Quart\, n. [F. quart, n. masc., fr. L. quartus the
   fourth, akin to quattuor four. See {Four}, and cf. 2d
   {Carte}, {Quarto}.]
   The fourth part; a quarter; hence, a region of the earth.
   [Obs.]

         Camber did possess the western quart.    --Spenser.

Quart \Quart\, n. [F. quarte, n. fem., fr. quart fourth. See
   {Quart} a quarter.]
   1. 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.

   Note: In imperial measure, a quart is forty English fluid
         ounces; in wine measure, it is thirty-two American
         fluid ounces. The United States dry quart contains
         67.20 cubic inches, the fluid quart 57.75. The English
         quart contains 69.32 cubic inches.

   2. A vessel or measure containing a quart.

Quart \Quart\, n. [See {Quart} a quarter.]
   In cards, four successive cards of the same suit. Cf.
   {Tierce}, 4. --Hoyle.

Source : WordNet®

quart
     n 1: a United States liquid unit equal to 32 fluid ounces; four
          quarts equal one gallon
     2: a British imperial capacity measure (liquid or dry) equal to
        2 pints or 1.136 liters
     3: a United States dry unit equal to 2 pints or 67.2 cubic
        inches [syn: {dry quart}]