Easton's Bible Dictionary (1897)
House of the desert, one of the six cities of Judah, situated in the sunk valley of the Jordan and Dead Sea (Josh. 18:22). ” It was afterwards included in the towns of Benjamin. It is called Arabah (Josh. 18:18).
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
BETH-AR'ABAH (house of the plain), a city of Judah in the wilderness, Josh 15:6, Josh 15:61; counted as a city of Benjamin, Josh 18:22; called Arabah in Josh 18:18, in the valley of the Jordan near the Dead Sea.