depressor

名词 depressor:

1. any skeletal muscle that draws a body part down
   同义词：depressor muscle
2. any nerve whose activity tends to reduce the activity or tone of the body part it serves
   同义词：depressor nerve
3. a device used by physician to press a part down or aside

de.pres.sor

n.（名词）
Something that depresses or is used to depress.
压下物，压抑物：压下的物体或使压抑的物体
An instrument used to depress a part:
压器，压板：用于压下某部分的仪器：
例句：
a tongue depressor.
压舌板

Any of various muscles that serve to draw down a part of the body.
降肌：用于消耗身体某部分的肌肉