onycha

CIDE DICTIONARY

onycha, n. [NL., from L. onyx, -ychis, onyx, also, a kind of mussel, Gr. , . See Onyx.].

An ingredient of the Mosaic incense, probably the operculum of some kind of strombus. Ex. xxx. 34. [1913 Webster]
The precious stone called onyx. [1913 Webster]

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