Open English Wordnet
Nouns
(n)Satan, Old Nick, Devil, Lucifer, Beelzebub, the Tempter, Prince of Darkness(Judeo-Christian and Islamic religions) chief spirit of evil and adversary of God; tempter of mankind; master of Hell
(n)morning star, daystar, Phosphorus, Lucifera planet (usually Venus) seen just before sunrise in the eastern sky