īrĭnus, a, um, adj., = ἴρινος,
of or belonging to the plant iris , iris- : sucus, Plin. 30, 14, 43, § 142: unguentum, Cels. 5, 18, 8. — Hence, subst.: īrĭnum , i, n., ointment made from the iris , iris-ointment , Cels. 3, 18; Plin. 20, 17, 71, § 182.