nǎi​zi

breast

奶子 nǎi​zi
breast noun
colloquial or vulgar term for a woman's breast

This dress is too tight; it shows the outline of her breasts.

milk noun
colloquial term for milk, typically breast milk

The little baby is breastfeeding.

Frequency

Movie subtitles
4.26 per million appears in 1% of films
Written text
0.446 per million

Sources

Definitions
CC-CEDICT