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A banded variety of chalcedony, a cryptocrystalline form of quartz.
A jet-black color, named after the gemstone.
Any of various lycaenid butterflies of the genus Horaga.
Jet-black
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Open "ONYX" in Dictionary ›About this page: This page provides the definition, meaning, pronunciation, synonyms, and usage examples for the word ONYX. It is part of the Word Puzzle Game dictionary — a free English word reference with 1,000+ words used in our puzzles. Difficulty: easy · Letters: 4 · More 4-letter words