fin
/fɪn/noun
Definitions
One of the appendages of a fish, used to propel itself and to manoeuvre/maneuver.
Example: The fish's fins minimize water flow.
A similar appendage of a cetacean or other marine animal.
Example: a dolphin's fin
A thin, rigid component of an aircraft, extending from the fuselage and used to stabilise and steer the aircraft.
Example: The fin stabilises the plane in flight.
A similar structure on the tail of a bomb, used to help keep it on course.
verb
Definitions
To cut the fins from a fish, shark, etc.
(Of a fish) to swim with the dorsal fin above the surface of the water.
To swim in the manner of a fish.
Example: A neutrally buoyant diver does not need to fin to maintain depth.
To provide (a motor vehicle etc) with fins.