Definitions
1.nounOne of the appendages of a fish, used to propel itself and to manoeuvre/maneuver."The fish's fins minimize water flow."
2.nounA similar appendage of a cetacean or other marine animal."a dolphin's fin"
3.nounA thin, rigid component of an aircraft, extending from the fuselage and used to stabilise and steer the aircraft."The fin stabilises the plane in flight."
4.nounA similar structure on the tail of a bomb, used to help keep it on course.
5.nounA 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.
6.nounA device worn by divers and swimmers on their feet."The divers wore fins to swim faster."
7.nounAn extending part on a surface of a radiator, engine, heatsink, etc., used to facilitate cooling.
8.nounA sharp raised edge (generally in concrete) capable of damaging a roof membrane or vapor retarder.
9.verbTo cut the fins from a fish, shark, etc.
10.verb(Of a fish) to swim with the dorsal fin above the surface of the water.
11.verbTo swim in the manner of a fish."A neutrally buoyant diver does not need to fin to maintain depth."
12.verbTo provide (a motor vehicle etc) with fins.
13.noun(formerly Australia) a five-pound (£5) note; the sum of five pounds.
14.nounA five-dollar bill; the sum of five dollars.