Wei Collection, Lower Volume
Radical: Meat (ròu)
Pao
Kangxi Strokes: 13
Page 984, Entry 13
Pronounced pao.
According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it refers to the bladder. Xu states: According to the Comprehensive Discussions in the White Tiger Hall (Baihu Tong), the bladder is the storehouse of the lungs. The Broad Rhymes (Guangyun) describes it as the water chamber within the abdomen. The Extensive Refinements (Boya) states that the bladder is called the pao.
In the Records of the Grand Historian (Shiji), Biography of Master Cang, it is written: Wind-heat pathogens affect the bladder. The commentary explains: This refers to the bladder.
Also, in the Explaining Names (Shiming), it is said to mean to hasten. During the summer months, it manifests as a rapid ailment, and over time it becomes putrid.
It is also used interchangeably with the character for placenta (bao) in the Collected Rhymes (Jiyun). In the Records of the Grand Historian (Shiji), Biography of Master Cang, the commentary on the passage concerning the bladder states: The Rectification of Meanings says: Pao is also written as bao.