Depressor

[di'presә]

(noun.) a device used by physician to press a part down or aside.

(noun.) any nerve whose activity tends to reduce the activity or tone of the body part it serves.

(noun.) any skeletal muscle that draws a body part down.

Typed by Annette--From WordNet

(n.) One who, or that which, presses down; an oppressor.

(n.) A muscle that depresses or tends to draw down a part.

Checker: Otis