'Stream' in the Bible

And I see in a vision, and it cometh to pass, in my seeing, and I am in Shushan the palace that is in Elam the province, and I see in a vision, and I have been by the stream Ulai.

And I lift up mine eyes, and look, and lo, a certain ram is standing before the stream, and it hath two horns, and the two horns are high; and the one is higher than the other, and the high one is coming up last.

And it cometh unto the ram possessing the two horns, that I had seen standing before the stream, and runneth unto it in the fury of its power.