fin
/fɪn/
verb
- To swim by moving fins, or to move through water like a fish.
- We finned our way to the surface after exploring the underwater cave.
- The fish finned against the current to reach its spawning ground.
- The scuba diver finned slowly through the coral reef.
noun
- A thin, flat part on the body of a fish, dolphin, or other aquatic animal, used for swimming and steering.
- The dolphin used its tail fin to propel itself out of the water.
- The goldfish fluttered its fins gracefully as it circled the bowl.
- The shark's dorsal fin cut through the water as it swam near the boat.
- A flat, usually vertical part attached to a vehicle or device for stability or control, such as on an airplane, car, or rocket.
- The old car had large fins on the back, which were popular in the 1950s.
- The rocket's fins guided it through the atmosphere.
- The airplane's tail fin helps keep it stable during flight.
- A five-dollar bill (slang).
- She found a fin on the sidewalk and picked it up.
- I only had a fin in my pocket, so I couldn't buy the book.
- He handed me a fin to pay for the coffee.
Synonyms