/ Dictionary / Index T Tishah b'Av: Meaning and Definition of Find definitions for: Tish•ah b'Av Pronunciation: (Seph. Heb.tē-shä' bu-äv'Ashk. Heb.tish'u-bôv&sec), [key] a Jewish fast day observed on the ninth day of the month of Av in memory of the destruction in Jerusalem of the First and Second Temples. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Tiselius Tishri Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language