太平公主

Etymology
Literally "Princess of Peace". The slang usage is a reanalysis of this expression as "Too-Flat Princess", thus its use in slang to refer to flat-chested woman.

Proper noun

 * 1)  (665-773), a princess of the

Noun

 * 1)  flat-chested woman

Synonyms

 * airport (slang for flat chest)
 * aircraft carrier (slang for flat chest)