'Hadad' definitions:

Definition of 'Hadad'

Hadad Adod, brave(?), the name of a Syrian god.
An Edomite king who defeated the Midianites (Gen. 36:35; 1 Chr. 1:46).
Another Edomite king (1 Chr. 1:50, 51), called also Hadar (Gen. 36:39; 1 Chr. 1:51).
One of "the king's seed in Edom." He fled into Egypt, where he married the sister of Pharaoh's wife (1 Kings 11:14-22). He became one of Solomon's adversaries.
Hadad, sharp, (a different name in Hebrew from the preceding), one of the sons of Ishmael (1 Chr. 1:30). Called also Hadar (Gen. 25:15).

Hadad, joy; noise; clamor