bruxism

名词 bruxism:

1. involuntarily or unconsciously clenching or grinding the teeth, typically during sleep

brux.ism

n.（名词）
The habitual, involuntary grinding or clenching of the teeth, usually during sleep, as from anger, tension, fear, or frustration.
磨牙：因愤怒、紧张、恐惧或失望，而通常在睡梦中的习惯性且无意识地磨牙或咬牙

来源：
From New Latin brôxis [a gnashing]
源自 现代拉丁语 brôxis [磨牙]
from Greek brôkein [to gnash]
源自 希腊语 brôkein [磨牙]