Boyd’s Bible Dictionary:
(ruins). (1) A Reubenite city on the Arnon (Deut. 2:36; Josh. 12:1-2; Judg. 11:26). Later fell back to Moab (Jer. 48:19-20). (2) A town of Gad (Num. 32:34; Josh. 13:25; 2 Sam. 24:5). (3) An unidentified place (Isa. 17:2). (4) A town in South Judah (1 Sam. 30:28).
Concise Bible Dictionary:
1. City “before Rabbah,” that is, near Rabbath Ammon; in the valley of the Jabbok, built or rebuilt by the tribe of Gad (Num. 32:34; Josh. 13:25; 2 Sam. 24:5).
2. Moabite city on the north bank of the Arnon (Deut. 2:36; Josh. 13:9, 16; Judg. 11:26; 2 Kings 10:33). Identified with Arair, 31° 27' N, 35° 43' E.
3. District near Damascus (Isa. 17:2).
4. City in Judah, S.E. of Beersheba (1 Sam. 30:28). Identified with Ararah, 31° 11' N, 34° 56' E.
Strong’s Dictionary of Hebrew Words:
Transliteration:
`Arow`er
Meaning:
or `Aro`er {ar-o-ayr'}; or `Ar`owr {ar-ore'}; the same as 6176; nudity of situation; Aroer, the name of three places in or near Palestine
Jackson’s Dictionary of Scripture Proper Names:
destitute
Potts’ Bible Proper Names:
Most sterile; barren; nudity of situation:―the name of four places, Num. 32:34. {Sterilissimus}