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Ounce

Defined in 2 dictionaries — Black's (1910), Bouvier (1839)

Black's Law Dictionary

Henry Campbell Black, M.A. · 1910

The twelfth part; the twelfth part of a pound troy or the sixteenth part of a pound avoirdupois.

A Law Dictionary, Adapted to the Constitution and Laws of the United States

John Bouvier · 1839

Vide Weights.