Seph. Heb. /ah sah rddah" beuh te"vet/ ; Ashk. Heb. /ah saw"rddeuh beuh tay"vays/
a Jewish fast day observed on the 10th day of the month of Tevet in memory of the beginning of the siege of Jerusalem in 586 B.C. by the Babylonians under King Nebuchadnezzar.
Also, Asarah Betebet .