Nimrod (nĭm'rŏd), rebellion; or the valiant, A son of Gush and grandson of Ham. Genesis 10:8 ff. He established an empire in Shinar, the classical Babylonia, the chief towns being Babel, Erech, Accad, and Calneh: and extended this empire northward along the course of the Tigris over Assyria, where he founded a second group of capitals, Nineveh, Rehoboth, Calah, and Resen.