Rabbi/ˈræbaɪ/ Definition 1 of 3Pro Tip 1/3Judaism Authority Use 'rabbi' to refer to a Jewish authority who guides on religious matters. The community consulted the rabbi for the holiday rituals. Pro Tip 2/3Leadership Role 'Rabbi' implies a role of leadership, often in charge of a synagogue. The new rabbi introduced engaging programs for the youth. Pro Tip 3/3Community Counselor Rabbis often act as counselors, offering advice and support to people. After the loss in her family, she found comfort in the rabbi's counsel.