Synonyms for Tishah B'Av (same or very similar meaning)
WordNet sense 1 ((Judaism) a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem):
Fast of Ab, Fast of Av, Ninth of Ab, Ninth of Av, Tisha b'Ab, Tisha b'Av, Tishah b'AbFrom the ODE community, based on WordNetadd/edit