ergastŭlārĭus, a, um, adj. [ergastulum], of or belonging to a workhouse or house of correction (late Lat.).
I Adj. : servus, Amm. 14, 11 fin. —Also: in tenebris ergastularibus, Sid. Ep. 7, 9.—
II Subst.: ergastularii , ōrum, m. (sc. servi), overseers of a penitentiary , Col. 1, 8, 17.