Rabbi

Concise Oxford English Dictionary © 2008 Oxford University Press:
rabbi /ˈrabʌɪ/

▶noun (pl. rabbis)

• 1 a Jewish scholar or teacher, especially of Jewish law.

• 2 a Jewish religious leader.

– derivatives
rabbinate /ˈrabɪnət/ noun.

– origin OE, via eccles. L. and Gk from Heb. rabbī ‘my master’, from raḇ ‘master’.