Webster's 1828 Dictionary
ONYCHA
n.[from Gr. ] Supposed to be the odoriferous shell of the onyxfish, or the onyx. Exodus 3 :34.
Webster's 1913 Dictionary
ONYCHA
On "y *cha, n. Etym: [NL. , from L. onyx, -ychis, onyx, also, a kind of mussel, Gr. Onyx. ]
1. An ingredient of the Mosaic incense, probably the operculum of some kind of strombus. Ex. xxx. 34.
2. The precious stone called onyx. [R.]
Duden Dictionary
Onychatrophie
Ony ch a tro phie, Onych atro phie Substantiv, feminin Medizin , die |Onychatroph ie |die Onychatrophie; Genitiv: der Onychatrophie griechisch-neulateinisch Verkümmerung der Nägel
The Wordsmith Dictionary