Wei Collection, Lower Volume
Radical: Meat (ròu)
肓
Kangxi strokes: 9
Page 973, Entry 21
Pronounced huāng.
Explanation from Explaining Graphs and Analyzing Characters (Shuowen Jiezi): Refers to the area located beneath the heart and above the diaphragm.
Zuo Tradition (Zuozhuan), Tenth Year of Duke Cheng: Located above the blind point and below the vital point.
Annotation: This refers to the diaphragm.