Lewis Short
uncĭa (noun F) : οὐγκία (Siculian and Etruscan; v. Müller, Etrusk. 1, p. 309 sq.) [akin to unus, unicus, unio; Gr. οἰνός]
* The twelfth part of any thing, a twelfth.
* Lit.
* Of inheritances: mortuus Babullius. Caesar, opinor, ex unciā, etsi nihil adhuc: sed Lepta ex triente,Cic. Att. 13, 48, 1: heres,Sen. Contr. 4, 28 med.; Cod. Just. 5, 27, 2.—Of a debt: non erit uncia tota,Mart. 9, 3, 5.
* Transf., a trifle, bit, atom: neque piscium ullam unciam hodie Pondo cepi,Plaut. Rud. 4, 2, 8; Juv. 11, 131: nulla de nostro nobis uncia venit apro,Mart. 9, 49, 12.
* As a weight, the twelfth part of a pound (as or libra), an ounce, Rhemn. Fan. Pond. 28; Plaut. Men. 3, 3, 3: uncia aloës,Plin. 20, 13, 51, § 140: Falerni,Mart. 1, 107, 3.
* As a measure of land, one twelfth of a jugerum, Col. 5, 1, 10.
* As a measure of length, the twelfth part of a foot, an inch, Front. Aquaed. 24; Plin. 6, 34, 39, § 214.
Charlton T. Lewis, Charles Short, A Latin Dictionary