'Jacchus' definitions:

Definition of 'Jacchus'

From: GCIDE

Jacchus \Jac"chus\, n. [NL., fr. L. Jacchus a mystic name of Bacchus, Gr. ?.] (Zool.) The common marmoset (Hapale vulgaris). Formerly, the name was also applied to other species of the same genus. [1913 Webster]