Hai Collection, Lower Volume Radical: Tooth (chǐ) Kangxi Strokes: 20 Page 1533, Entry 14 Pronounced chai. According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it refers to teeth rubbing against one another. Another source indicates it describes the appearance of a mouth opened to reveal the teeth. Also pronounced chai. According to the Jade Chapters (Yupian) and the Broad Rimes (Guangyun), it refers to uneven teeth. Also pronounced zi. The meaning is the same. Also pronounced qi. Refers to tooth decay or dental disease. Also pronounced zhai. Refers to uneven teeth. Also pronounced cha. The meaning is the same. Also pronounced xie. Sometimes written in a variant form.