The Collaborative International Dictionary of English v.0.48:

Temptress \Tempt"ress\, n.
   A woman who entices.
   [1913 Webster]

         She was my temptress, the foul provoker. --Sir W.
                                                  Scott.
   [1913 Webster]

WordNet (r) 3.0 (2006):

temptress
    n 1: a woman who is considered to be dangerously seductive [syn:
         enchantress, temptress, siren, Delilah, femme
         fatale]