the oak or heap of Assyria, a territory in Asia of which Arioch was king (Gen. 14:1, 9). It is supposed that the old Chaldean town of Larsa was the metropolis of this kingdom, situated nearly half-way between Ur (now Mugheir) and Erech, on the left bank of the Euphrates. This town is represented by the mounds of Senkereh, a little to the east of Erech.
Senkereh (Larsa) on the other hand, which has been identified with the ellasar of Genesis xiv.
But ellasar is clearly the Larsa of the cuneiform inscriptions, perhaps with the word al, "city," prefixed.
And with Arioch kynge of ellasar: foure kynges agenste v. And that vale of siddim was full of slyme pyttes.