dichalcum

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

dĭchalcum, i, n., = δίχαλκον,

a small coin, the fourth (acc. to others, the fifth) part of an obolus , Vitr. 3, 1; cf. Plin. 21, 34, 109, § 185.