Correct
磨牙
/ móyá /
Strokes
Definition
to grind one's teeth (during sleep)/pointless arguing/(coll.) molar
Example
As a Verb
grind one's teeth (in sleep)
1
Yǒuxiē
有些
rén
人
shuìjiào
睡觉
shí
时
móyá
磨牙
。
Some people grind their teeth during sleep.
As a Verb
argue pointlessly; indulge in idle talk
2
Gēn
跟
tā
他
móyá
磨牙
méiyòng
没用
。
It's no use arguing with him.
As a Noun
molar
3
Móyá
磨牙
qǔdòng
龋洞
molar cavities