ergastŭlārĭus
a, um, adj.
I.
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.