Concise Bible Dictionary:
City or district somewhere near the Euphrates, from whence Abraham was called of God (Gen. 11:28, 31; Gen. 15:7; Neh. 9:7). It is supposed to be identified with Mugheir, one of the most ancient sites in Chaldea, situate about 31° N, 46° 10' E. There are ruins of the true Chaldean type, with many tombs, indeed almost a city of tombs, the dead having been brought thither from long distances for burial because of the supposed sanctity of the place.