In the United States, a bottle of whiskey, vodka, or similar spirits containing one-tenth of a U.S. gallon; half the size of the much more common fifth, containing one-fifth of a gallon, or ⁴⁄₅ of a quart. See reputed quart.
After the fifth was standardized at 750 milliliters, the name tenth continued in use for a bottle with 375 milliliters (3.4 milliliters less than before).
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Last revised: 8 March 2008.