piscine
/ˈpɪskɪn/ or /ˈpɪsɪni/Definitions
1. adjective
relating to or resembling fish
“The hotel’s pool was a large, piscine area with a swim-up bar.”
2. noun
a pool, especially a swimming pool
“The family spent the day at the piscine, playing games and splashing around.”
3. noun
a collection of fish
“The scientist studied the local piscine, observing their behavior and habitats.”
4. noun
a tank or container for keeping fish
“The aquarist set up a large piscine in her living room to display her collection of tropical fish.”