Tiphsah

Concise Bible Dictionary:

1. The boundary of Solomon’s dominions on the Euphrates (1 Kings 4:2424For he had dominion over all the region on this side the river, from Tiphsah even to Azzah, over all the kings on this side the river: and he had peace on all sides round about him. (1 Kings 4:24)). This is doubtless the city known to the Greeks and Romans as Thapsacus, situated at the ford of the Euphrates, which well agrees with the signification of Tiphsah, “passing over.” It was where Cyrus, Darius Codomannus, and Alexander crossed during their wars. The town was a place of importance. Identified with Suriyeh, 35° 54' N, 38° 48' E. A traveler in the winter of 1841-2 found but twenty inches of water in the Euphrates at this spot.

Jackson’s Dictionary of Scripture Proper Names:

she shall pass over