fishtank
nounUK /ˈfɪʃtæŋk/
US /ˈfɪʃtæŋk/
A fishtank is a glass box filled with water where fish live.
We bought a new fishtank and put three goldfish inside.
OTHER MEANINGS
2. A place where fish are kept for sale or display.
The pet store has a big fishtank near the entrance.
3. A military vehicle for carrying troops, also called a tank.
The soldiers rode in a fishtank across the field.
4. A slang term for a place where people are watched closely, like a prison cell.
The guard called the small room a fishtank.