Beelzebub

(n.) The title of a heathen deity to whom the Jews ascribed the sovereignty of the evil spirits; hence, the Devil or a devil. See Baal.

Thesaurus Entries

Abaddon, Aeshma, Angra Mainyu, Apollyon, Azazel, Belial, Eblis, Lilith, Lucifer, Mephisto, Mephistopheles, Old Nick, Old Scratch, Putana, Sammael, Satan, Shaitan, diablo, fiend, serpent