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.