Source : Webster's Revised Unabridged Dictionary (1913)

Seducer \Se*du"cer\, n.
   One who, or that which, seduces; specifically, one who
   prevails over the chastity of a woman by enticements and
   persuasions.

         He whose firm faith no reason could remove, Will melt
         before that soft seducer, love.          --Dryden.

Source : WordNet®

seducer
     n 1: a bad person who entices others into error or wrong-doing
     2: a man who takes advantage of women [syn: {ladies' man}, {lady
        killer}]