Zi Collection, Middle Volume
Radical: Person (rén)
Kangxi Strokes: 9
Page 105, Entry 05
Jade Chapter (Yupian): Pronounced gan (falling tone)
Expanded Rhymes (Guangyun) and Collected Rhymes (Jiyun): Pronounced san (falling tone), combined with the falling tone of the character sa.
Regarding the term dan-san: it describes a foolish appearance.