Lewis Short
dĕ-unx (noun M) : uncia
* Eleven twelfths, Varr. L. L. 5, § 172 Müll.: jugeri,Col. 5, 1, 12: heres ex deunce,Cic. Caecin. 6 fin.: avidi deunces,i. e. eleven per cent.,Pers. 5, 150: potare deunces, i. e. eleven measures (cyathos), Mart. 12, 28; cf. id. 6, 78.
Charlton T. Lewis, Charles Short, A Latin Dictionary