齯齿 níchǐ new teeth in old age Origin Definitions Defs Strokes Stroke Words Sentences Sents 齯 ní new teeth in old age (literary) new teeth grown by an elderly person after their original teeth have fallen out齿 齒 chǐ noun tooth (bound form) tooth; teeth; refers specifically to the organs in the mouth used for chewing, as in 牙齿 yáchǐ