Tormentor

noun

1. One who torments; a person, animal, or object that causes suffering.
2. Something abstract that causes suffering.
3. One of a pair of narrow curtains just behind the front curtain and teaser that mask the areas on the sides of the stage and can be adjusted to the desired width.
4. An implement for reducing a stiff soil, resembling a harrow, but running upon wheels.
5. A long meat-fork.