Yin Collection, Upper Volume
Radical: Corpse (shī)
Page 301, Entry 21
Comprehensive Dictionary (Zihui): Pronounced diǎo (third tone), with a sound similar to the third tone of diāo. Refers to the male genitalia.
Correct Guide to Characters (Zhengzitong): This is a common folk term; in historical biographies and records, it is always written as shì (the term for power or potential, used here as a euphemism).