Lewis Short
ŏpuscŭlum (noun N) : dim.1. opus
* A little work (class.): Myrmecides minutorum opusculorum fabricator,Cic. Ac. 2, 38, 120: accipies igitur hoc parvum opusculum lucubratum his jam contractioribus noctibus, id. Par. prooem. § 5: Cassi Parmensis,Hor. Ep. 1, 4, 3: mea,id. ib. 1, 19, 35.
Charlton T. Lewis, Charles Short, A Latin Dictionary