齿

锯齿

jù chǐ

sawtooth

锯齿形

jù chǐ xíng

sawtooth shape

锥齿轮

zhuī chǐ lún

pinion gear

铁齿

tiě chǐ

(Tw) obstinate; argumentative; opinionated; skeptical of superstitions (from Taiwanese, Tai-lo pr. [thih-khí])

铁齿铜牙

tiě chǐ tóng yá

clever and eloquent speaker (idiom)

门齿

mén chǐ

incisor

难以启齿

nán yǐ qǐ chǐ

to be too embarrassed to mention sth (idiom)

露齿

lù chǐ

to grin

露齿而笑

lù chǐ ér xiào

to grin

马齿徒增

mǎ chǐ tú zēng

(self-deprecating) to have grown old without accomplishing anything (idiom)

马齿苋

mǎ chǐ xiàn

Portulaca oleracea (common purslane)

斗口齿

dòu kǒu chǐ

to quarrel