すっぽん
suppon

Noun

1. Chinese soft-shelled turtle (Pelodiscus sinensis); soft-shelled turtle (Trionychidae)

Usually Written in Kana
つきとすっぽんだ。
tsukito supponda.
They are as different as day and night.
Noun

2. trap door located on the walkway in a kabuki theatre

Noun

3. bilge pump (used on traditional Japanese ships)

Other forms: