A chief city in the Moabite territory. In Jerome's time it was called Areopolis. It is identified with Rabba,, 31 19' N, 35 38' E , about 10 miles from the Dead Sea. Numbers 21:15,28; Isaiah 15:1 . In other passages the name Ar appears to include the land of the Moabites. Deuteronomy 2:9,18,29 .