Uncia
Defined in 2 dictionaries — Cyclopedic (1922), Black's (1910)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The twelfth part of the Roman as. Dess. Diet, du Dig. "As." The as was one-twelfth of a pound, i. e., an ounce. Id.; 2 BL Comm. 462, note (m). UNCIA TERRAE (Lat.) This phrase often occurs in charters of the British kings, and denotes some quantity of land. It was twelve modii, each modius possibly one hundred feet square. Mon. Angl. torn. 3, pp. 198, 205.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Lat.
In Roman law. An ounce; the twelfth of the Roman "as," or pound. The twelfth part of anything; the proportion of one-twelfth. 2 Bl. Comm. 462, note m.