Easton's Bible Dictionary (1897)
Firm, a descendant of Cush, the son of Ham. ” Babel was the beginning of his kingdom, which he gradually enlarged (Gen. 10:8-10). The “land of Nimrod” (Micah 5:6) is a designation of Assyria or of Shinar, which is a part of it.
Smith's Bible Dictionary (1863)
(rebellion; or the valiant), a son of Cush and grandson of Ham. , from which we learn (1) that he was a Cushite; (2) that he established an empire in Shinar (the classical Babylonia) the chief towns being Babel, Erech, Accad and Calneh; and (3) that he 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.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
NIM'ROD (firm, strong), the son of Cush and grandson of Ham. Gen 10:8. He is described as having been a "mighty hunter before the Lord," and was thus pre-eminent in the chase, a pursuit practised very early in the history of the race. He, however, was also a great conqueror, "a mighty one in the earth," and founded the classical and most ancient kingdom of Babylon, and built the city of that name and others. Gen 10:10. The territory and kingdom of Babylon was long known, after the name of its first hero, as the land of Nimrod Mic 6:6.
Hitchcock's Bible Names (1869)
rebellion (but probably an unknown Assyrian word)