Meaning

(ichthyology, zootomy) One of the appendages of a fish, used to propel itself and to manoeuvre/maneuver..

Definitions by Sense

1. (ichthyology, zootomy) One of the appendages of a fish, used to propel itself and to manoeuvre/maneuver.
2. A similar appendage of a cetacean or other marine animal.
3. A thin, rigid component of an aircraft, extending from the fuselage and used to stabilise and steer the aircraft.
4. A similar structure protruding from a projectile, used to help keep it on course.
5. (surfing) A similar structure on the bottom of a surfboard, used to help steer it.
6. A hairstyle, resembling the fin of a fish, in which the hair is combed and set into a vertical ridge along the top of the head from about the crown to the forehead.
7. A device worn by divers and swimmers on their feet.
8. An extending part on a surface of a radiator, engine, heatsink, etc., used to facilitate cooling.

Example Sentences

The fish's fins minimize water flow.

Then he commenced to talk, really talk. and inside of two flaps of a herring's fin he had me mesmerized, like Eben Holt's boy at the town hall show. He talked about the ills of humanity, and the glories of health and Nature and service and land knows what all.

a dolphin's fin

The fin stabilises the plane in flight.

The divers wore fins to swim faster.

"Done say I to that, Reuben, tip me your fin, my spark, and it shall be a bet."

When you spot him finning just under the surface, you move up quietly and present [...] bait, usually a squid.

A neutrally buoyant diver does not need to fin to maintain depth.

Word Forms

• fins
• finning
• finned

Synonyms for fin.

Related Words

When Should You Use Fin.?

Use fin. when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.

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