Ar'oer. (ruins).

1. A city on the torrent Arnon, the southern point of the territory of Sihon king of the Amorites and afterwards of the tribe of Reuben, Deuteronomy 2:36; Deuteronomy 3:12; Deuteronomy 4:48; Joshua 12:2; Joshua 13:9; Joshua 13:16; Judges 11:26; 2 Kings 10:33; 1 Chronicles 5:8, but later again in possession of Moab. Jeremiah 48:19. It is the modern Ara'ir, upon the very edge of the precipitous north bank of the Wady Mojeb.

2. Aroer, "that is 'facing' Rahbah" (Rabbah of Ammon), a town built by and belonging to Gad. Numbers 32:34; Joshua 13:25; 2 Samuel 24:5. This is probably the place mentioned in Judges 11:33 which was shown in Jerome's time.

3. Aroer, in Isaiah 17:2 if a place at all, must be still farther north than either of the two already named.

4. A town in Judah, named only in 1 Samuel 30:28 perhaps Wady Ar'arah, on the road from Petra to Gaza.