Old English Belzebub, Philistine god worshipped at Ekron (2 Kings i:2), from Latin, used in Vulgate for New Testament Greek beelzeboub, from Hebrew 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.
Note: Beelzebub also appears in Milton's <i>Paradise Lost</i> as one of the fallen angels, second only to Satan in power.
Note: By extension, a “Beelzebub” is any demon or evil spirit.
(Gr. form Beel'zebul), the name given to Satan, and found only in the New Testament (Matt. 10:25; 12:24, 27; Mark 3:22). It is probably the same as Baalzebub (q.v.), the god of Ekron, meaning "the lord of flies," or, as others think, "the lord of dung," or "the dung-god."