n :  any of various measures of liquid capacity equal to one-half quart: as  a  :  a U.S. measure equal to 16 fluid ounces, 473.176 milliliters, or 28.875 cubic inches  b  :  a British measure equal to 20 fluid ounces, 568.26 milliliters, or 34.678 cubic inches .
 
 
 
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