Mao Collection, Lower Volume
Radical: Tapping (pū)
Entry: Zhuo
Kangxi Strokes: 17
Page 475, Entry 39
Tang Rhymes (Tangyun), Broad Rhymes (Guangyun), Collected Rhymes (Jiyun), Classified Chapters (Leipian), and Rhyme Meeting (Yunhui): Pronounced zhuo.
Explanation from Explaining Graphs and Analyzing Characters (Shuowen): A form of punishment involving the removal of the genitals. The Book of Documents (Shujing) states: Slicing the nose, cutting the ears, removing genitals, and tattooing. Note: In the Canon of Lu, this is currently written with a different variant form.
Also, according to Collected Rhymes (Jiyun): Pronounced zhuo. The meaning is the same.
Also, according to Classified Chapters (Leipian): Pronounced zhu. Meaning: to strike or hit.
Also, according to Collected Rhymes (Jiyun): Pronounced shu. Meaning: the same.