"The name of many deities of the Semitic peoples" [Klein], late 14c., Biblical use is from Heb. Ba'al, lit. "owner, master, lord," from ba'al "he took possession of," also "he married;" related to Akkad. Belu (source of Heb. Bel), name of Marduk. Also related to the first element in Beelzebub. Used figuratively for any "false god."
O.E. Belzebub, Philistine god worshipped at Ekron (2 Kings i.2), from L., used in Vulgate for N.T. Gk. beelzeboub, from Heb. ba'al-z'bub "lord of the flies," from ba'al "lord" + z'bhubh "fly." By later Christian writers often taken as another name for "Satan," though Milton made him one of the fallen angels.
fem. proper name, from Heb., lit. "graciousness," from stem of hanan "he was gracious, showed favor;" cf. Punic Hannibha'al "Hannibal," lit. "my favor is with Ba'al."