/ Dictionary / Index N Ninth of Av: Meaning and Definition of Find definitions for: Ninth' of Av' Pronunciation: [key] — Judaism. Judaism. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ninth Commandment Ninurta Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language