Boyd’s Bible Dictionary:
(wasting). (1) A town of Gad (Num. 32:3,34). Dibon-gad (Num. 33:45-46). Accounted to Reuben (Josh. 13:9,17). Now Dhiban, within the gateway of which the famous Moabite stone was found in 1868. (2) A town in south Judah (Neh. 11:25).
Concise Bible Dictionary:
1. City on the east of the Jordan in Moab, afterward possessed by Gad; but near the time of the captivity it was again seized by Moab (Josh. 13:9, 17; Num. 21:30; Num. 32:3, 34; Isa. 15:2; Jer. 48:18, 22). Also called DIBON-GAD in Numbers 33:45-46. Identified with Dhiban, 31° 30' N, 35° 45' E.
2. City inhabited on the return from exile (Neh. 11:25): perhaps the same as DIMONAH. Not identified.
Jackson’s Dictionary of Scripture Proper Names:
the waster: sufficient understanding (?)