- a ram's horn blown as a wind instrument, sounded in Biblical times chiefly to communicate signals in battle and announce certain religious occasions and in modern times chiefly at synagogue services on Rosh Hashanah and Yom Kippur.
- a ram's horn sounded in the synagogue daily during the month of Elul and repeatedly on Rosh Hashanah, and by the ancient Israelites as a warning, summons, etc
