onyxis onyx marble • onyxitis · · · Info · Definitions · Synonyms · Characters · · onyxis · · Text Latin · · Script 6 · · Length 3 · · Syllables Definitions · · · (noun) toenail having its free tip or edges embedded in the surrounding flesh. Synonyms: ingrown toenail. · · Noun Definition 1 Synonyms · · · ingrown toenail · · Synonym 1 Characters · · i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 x latin small letter x U+0078 y latin small letter y U+0079