A Jewish organization, founded in 1843, that supports cultural and educational programs, provides services, and opposes discrimination and anti-Semitism.
Webster's New World
Origin of B'nai B'rith
Hebrew bənê bərîtsons of (the) covenantbənêbound pl. ofbēnsonbn in Semitic roots bərîtcovenantbry in Semitic roots
From
American Heritage Dictionary of the English Language, 5th Edition