ŏnychĭnus, a, um, adj., = ὀνύχινος.
I Of the color of the finger-nail , nail-colored : pira, Plin. 15, 15, 16, § 55: pruna, Col. 12, 10.—
II Of the marble called onyx: lapis, Vulg. Gen. 2, 12.—As subst.: onychinus, the onyx , Vulg. Exod. 39, 13.—Transf., resembling the onyx (poet.) of the coating of ice on rivers: tegimen onychinum, Laev ap. Gell. 19, 7 fin.—Subst. : ŏnychĭna (sc. vasa), n. plur., vessels of onyx , Lampr. Heliog. 32.