RABBAH BAR NAHMANI ( c. 270-c. 330), a Babylonian rabbi or amora. He was for twenty-two years head of the Academy at Pumbeditha. His great dialectic skill acquired for him the epithet "uprooter of mountains." The Talmud owes much to this rabbi. He is said to have perished in a jungle into which he had fled from the officers of the Persian king.
See Graetz, History of the Jews (Eng. trans.), vol. ii. ch. xxi.; Bacher, Agada der Babyl. Amore er, 97-101. (I. A.)