(bound form) tooth; teeth; refers specifically to the organs in the mouth used for chewing, as in 牙齿 yá​chǐ

(bound form) something shaped like or arranged like teeth, such as the teeth on a comb, saw, or gear

(bound form) age; the number of years a person has lived, as used in literary expressions like 年齿 nián​chǐ

(bound form) to mention; to speak of; to bring up in conversation

(bound form) to stand alongside; to be ranked with or compared to others

a Chinese surname

Kangxi radical 214; the tooth radical