Source : Webster's Revised Unabridged Dictionary (1913)

Tormentor \Tor*ment"or\, n.
   1. One who, or that which, torments; one who inflicts penal
      anguish or tortures. --Jer. Taylor.

            Thoughts, my tormentors, armed with deadly stings.
                                                  --Milton.

   2. (Agric.) An implement for reducing a stiff soil,
      resembling a harrow, but running upon wheels. --Hebert.

Source : WordNet®

tormentor
     n 1: someone who torments [syn: {tormenter}, {persecutor}]
     2: a flat at each side of the stage to prevent the audience
        from seeing into the wings [syn: {tormenter}, {teaser}]