Wei Collection, Lower Volume
Radical: Meat (ròu)
胯
Kangxi Strokes: 12
Page 980, Entry 21
Tang Rhyme (Tangyun), Collection Rhymes (Jiyun), Rhyme Meetings (Yunhui), and Correct Rhymes (Zhengyun) state the pronunciation is ku (falling tone).
Explaining Graphs and Analyzing Characters (Shuowen) defines it as the thigh.
Correct Rhymes (Zhengyun) states it is the space between the thighs.
Records of the Grand Historian (Shiji), Biography of the Marquis of Huaiyin: One who cannot face death, crawls between my legs.
Commentary: This refers to the thigh.
Also, according to Broad Rhymes (Guangyun), pronounced kua. According to Collection Rhymes (Jiyun), Rhyme Meetings (Yunhui), and Correct Rhymes (Zhengyun), pronounced kua.
Also, according to Broad Rhymes (Guangyun) and Correct Rhymes (Zhengyun), pronounced kua (falling tone). According to Collection Rhymes (Jiyun) and Rhyme Meetings (Yunhui), pronounced kua. The meaning is the same.
Also, according to Collection Rhymes (Jiyun), pronounced kuai. It describes the appearance of fat meat.