Rehoboth
Easton's Dictionary
Broad places. (1.) A well in Gerar dug by Isaac (Gen. 26:22), supposed to be in Wady er-Ruheibeh, about 20 miles south of Beersheba.
(2.) An ancient city on the Euphrates (Gen. 36:37; 1 Chr. 1:48), “Rehoboth by the river.”
(3.) Named among the cities of Asshur (Gen. 10:11). Probably, however, the words “rehoboth’ir” are to be translated as in the Vulgate and the margin of A.V., “the streets of the city,” or rather “the public square of the city”, i.e., of Nineveh.
Smith's Dictionary
(wide places, i.e. streets).
The third of the series of wells dug by Isaac, (Genesis 26:22) in the Philistines’ territory, lately identified as er-Ruheibeh, 16 miles south of Beersheba. One of the four cities built by Asshur, or by Nimrod in Asshur, according as this difficult passage is translated. (Genesis 10:11) Nothing certain is known of its position. The city of a certain Saul or Shaul, one of the early kings of the Edomites. (Genesis 36:37; 1 Chronicles 1:48) The affix “by the river” fixes the situation of Rehoboth as on the Euphrates.