Orcīnus

a, um, adj.

id.

I. of or belonging to the realms of the dead: liberti, Dig. 26, 4, 3, § 3; ib. 33, 8, 22; ib. 40, 5, 30, § 12 al.: senatores, Suet. Aug. 35.
Lewis & Short
A Latin Dictionary, 1879
An open-access project