"(1.) Now Tell Arad, a Canaanite city, about 20 miles south of" "Hebron. The king of Arad "fought against Israel and took of them" "prisoners" when they were retreating from the confines of Edom" (Num. 21:1; 33:40; Judg. 1:16). It was finally subdued by Joshua (12:14). "(2.) One of the sons of Beriah (1 Chr. 8:15).

See where Arad occurs in the Bible...

Definition of Arad:
"a wild ass; a dragon"