sheytan

from The Collaborative International Dictionary of English v.0.48

Shaitan \Shai"tan\, Sheitan \Shei"tan\, n. [Written also
   {sheytan}.] [Hind. shait[=a]n, fr. Ar. shai[.t][=a]n.]
   1. Among Mohammedans:
      (a) An evil spirit; the evil one; the devil.
      (b) One of bad disposition; a fiend. [Colloq.]
          [Webster 1913 Suppl.]

   2. (Meteor.) A dust storm. [India]
      [Webster 1913 Suppl.]