启齿 qǐchǐ to open one's mouth Origin Definitions Defs Strokes Stroke Words Sentences Sents 启 啟 qǐ to open (bound form) to open or unfold; used in words for opening a letter, a door, or one's mouth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