tormenter

from WordNet (r) 3.0 (2006)

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

from The Collaborative International Dictionary of English v.0.48

Tormenter \Tor*ment"er\, n.
   1. One who, or that which, torments; a tormentor.
      [1913 Webster]

   2. An executioner. [Obs.] --Chaucer.
      [1913 Webster]

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