Common Meanings
1
chǐ齿
Teeth, the organs in the mouth of humans and animals used for chewing food. It can also figuratively refer to contempt or scorn (e.g., to make one gnash their teeth in scorn).
他的冷漠让众人齿冷
His indifference made everyone feel contempt.
Refers to tooth-like projections or cogs on objects, such as gears, sawteeth, or comb teeth.
工程师正在检查机器的齿轮，确保它们运转顺畅。
The engineer is checking the machine's gears to ensure they run smoothly.
Age, especially one's own, often used humbly to denote increasing age without substantial accomplishments (e.g., 马齿徒增).
眼看自己马齿徒增，却仍一事无成，实在令人惭愧。
I feel truly ashamed to see my age advancing without any significant achievements, feeling as though my years have increased in vain.
To disdain; to despise; to consider beneath contempt due to disgraceful conduct.
他因其虚伪行为而为人所不齿
He is despised by others for his hypocritical behavior.
To mention; to be worth mentioning.
他的这些小失误，根本不足齿数，不必介意。
His minor mistakes are not worth mentioning at all, so don't worry about them.
To touch, especially referring to touching a sword, implying being killed or committing suicide by it (as in the archaic phrase '齿剑').
古时，有不屈之士，宁愿齿剑殉节，也不愿苟且偷生。
In ancient times, there were unyielding individuals who would rather touch the sword and die for their integrity than live on ignobly.