B2nounnaturescience
US/fɪn/
UK/fɪn/
a thin flat part on the body of a fish or sea animal that helps it swim
In context
The shark's fin rose above the water near the boat.
Fish use their fins to steer and to stay balanced.
Divers wear rubber fins on their feet to swim faster.
Words that go with fin
adjective + noun
- dorsal finThe dorsal fin of a shark is easy to recognize.
- pectoral finThe fish moves its pectoral fins to turn.
noun + noun
- shark finShark fin soup is banned in many places.
- tail finA strong tail fin pushes the fish forward.
noun + preposition
- fin of a fishThe fin of a fish works like a rudder.
- pair of finsDivers wear a pair of fins to swim faster underwater.