Aroer

ruins.

(1.) A town on the north bank of the Arnon (Deut 4:48; Judg 11:26; 2Kings 10:33), the southern boundary of the kingdom of Sihon (Josh 12:2). It is now called Arair, 13 miles west of the Dead Sea.

(2.) One of the towns built by the tribe of Gad (Num 32:34) "before Rabbah" (Josh 13:25), the Ammonite capital. It was famous in the history of Jephthah (Judg 11:33) and of David (2Sam 24:5). [Comp. (Isa 17:2; 2Kings 15:29)].

(3.) A city in the south of Judah, 12 miles south-east of Beersheba, to which David sent presents after recovering the spoil from the Amalekites at Ziklag (1Sam 30:26; 30:28). It was the native city of two of David's warriors (1Chr 11:44). It is now called Ar'arah.

EBD - Easton's Bible Dictionary