As·mo·de·us 
(ăz′mə-dēəs, ăs′-)
(ăz′mə-dēəs, ăs′-)n.
A demon appearing in the biblical book of Tobit, considered in the Talmud to be the king of demons and depicted in later Jewish tradition as a mischievous sprite.
[Medieval Latin Asmodaeus, from Mishnaic Hebrew 'ašməday, from Avestan *Aēšma-daēuua-, demon of anger : aēšma-, anger, Aeshma (a Zoroastrian demon); see eis- in the Appendix of Indo-European roots + daēuua-, demon; see dyeu- in the Appendix of Indo-European roots.]