乳にゅう溝こう

also: ちちみぞ

にゅ

う

こ

う

Meanings

1

mammary slit

Zoological term for the groove housing the mammary glands in whales, dolphins, and porpoises.

クジラの乳にゅう溝こうは、乳にゅう腺せんを保ほ護ごする役やく割わりがある。
The mammary slit of whales serves to protect the mammary glands.

2

Slang term for the cleavage between breasts; often written in kana as ちちみぞ.

そのドレスはちちみぞが強きょう調ちょうされるデザインだ。
That dress has a design that emphasizes the cleavage.