Chen Collection, Middle Volume Radical: Tree (mù) Rui Kangxi Strokes: 8 Page 516, Entry 06 Pronounced rui (falling tone). Yu Pian (Jade Chapters): A handle or tenon. Lei Pian (Classified Chapters): Carving the end of a piece of wood so that it may enter a mortise. Zhuangzi, Tianxia Chapter: A mortise does not encompass the tenon. Xunben Commentary: The mortise does not enclose the tenon, but the tenon enters of itself. Song Yu, Nine Arguments (Jiubian): With a round mortise and a square tenon, I have always known they would be ill-fitting and difficult to join. Also, in Rhyme Collection (Yunhui), it is commonly written in a variant form (nei). Rites of Zhou, Winter Officers, Record of Trades (Zhouli, Dongguan Kaogongji) Commentary: Adjust the mortise and tenon to join them. Also, in Broad Elegant (Boya): A tenon is a pillar. Also, according to Jiyun (Collected Rhymes): Pronounced nen. It describes grass when it first begins to grow. Textual Research: Song Yu, Nine Arguments (Jiubian): With a round tenon and a square mortise, I have always known they would be ill-fitting and difficult to join. Per the original text, the tenon has been corrected to mortise, and the mortise has been corrected to tenon. The character "qi" has been added after the word "zhi".