Hadad means in the bible: Even though Hadad is not listed as a pagan god in the Old Testament it can be seen from Ras Shamrah tablets, that Hadad was either the sun god or the storm god of Syria/Edom. Hadad is mentioned in the Old Testament as a combination of other names, and standing alone Gen. 36.35; 1 Kgs. 11:14-25; 15:18-20; 20:1-34; 1 Chr. 1:30, 46, 50; Amos 1:4; Zech. 12:11, Benhadad is the ruler of Damascus Syria.
(in Bible Dictionary)