depressor
noun [ C ] medical specialized uk/dɪˈpres.ər/ us/dɪˈpres.ɚ/
(MUSCLE)
降肌
a muscle that pulls down part of the body
(TOOL)
（医用）压器，压制剂
a medical tool used to push parts of the body out of the way during an operation
a tongue depressor 压舌板，压舌器
(NERVE)
减压神经
a nerve that reduces the activity of an organ