Pronunciation : O"nyx
Part of Speech : n.
Etymology : [L., fr. Gr. Nail, and cf. Onycha.] (Min.)
Definition : Defn: Chalcedony in parallel layers of different shades of color. It is used for making cameos, the figure being cut in one layer with the next as a ground. Onyx marble, a banded variety of marble or calcium carbonate resembling onyx. It is obtained from Mexico.
Source : Webster's Unabridged Dictionary, 1913