Chen Collection, Middle Volume. Radical: Tree (mù). Kangxi stroke count: 11. Page 528, Entry 18. Broad Rimes (Guangyun) and Compilation of Rimes (Jiyun) record its pronunciation as tu. It is the name of a type of tree. The Classified Collection (Leipian) states that it is the catalpa tree. Furthermore, Broad Rimes (Guangyun) records another pronunciation as tu (level tone). It means sharp or pointed. Additionally, Compilation of Rimes (Jiyun) records another pronunciation as cha. Yang Xiong's Dialects (Fangyan) records that the people of the Wu region call thorny trees tu. Furthermore, Compilation of Rimes (Jiyun) records another pronunciation as yu. The meaning is the same.