tooth

US /tuːθ/
UK /tuːθ/
"tooth" picture
1.

牙齿

each of a set of hard, bony enamelled structures in the jaws of most vertebrates, used for biting and chewing food.

:
He brushed his teeth twice a day.
他每天刷两次
The baby is cutting a new tooth.
宝宝正在长新
2.

齿, 锯齿

a projection on a gear, saw, or comb.

:
The saw has sharp teeth.
锯子有锋利的齿
The comb's teeth are broken.
梳子的齿断了。