/ Dictionary / Index B blue onyx: Meaning and Definition of Find definitions for: blue' on'yx. Pronunciation: [key] — Jewelry. Jewelry. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. blue note blue-pencil Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language