Boyd’s Bible Dictionary:
(one of four). A forefather of Anak (Josh. 14:15; 15:13; 21:11).
Concise Bible Dictionary:
Father of Anak, head of the Anakim, who were also giants (Numb. 13:33). Their city was Hebron (Gen. 35:27; Josh. 14:15; Josh. 15:13; Josh. 21:11). The “city of Arba” is elsewhere called KIRJATH-ARBA, which was afterward called HEBRON.
Jackson’s Dictionary of Scripture Proper Names:
four