pò​guā

age 16

破瓜 pò​guā
age 16
the age of sixteen for a girl, derived from the character guā being split into two (eights)
age 64
the age of sixty-four for a man, derived from multiplying two (eights) from the character guā
deflower
to lose one's virginity or to deflower a girl

Frequency

Written text
0.037 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)