Fin definitions

fĭn
Fin is a French term meaning the end or finish.

An example of fin is the end of a French movie.

noun
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The definition of a fin is a wing-like limb attached to many animals living in water, used for swimming and balance.

An example of a fin is what fish use for swimming in the water.

An example of a fin is what sticks out of the water when a shark is near the surface.

noun
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A membranous appendage extending from the body of a fish or other aquatic animal, used for propelling, steering, or balancing the body in the water.
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To equip with fins.
verb
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To emerge with the fins above water.
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To swim, as a fish.
verb
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To lash the water with the fins. Used of a dying whale.
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A five-dollar bill.
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Finland.
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Finnish.
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Any of several winglike, membranous organs on the body of a fish, dolphin, etc., used in swimming, turning, and balancing.
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Finance.
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Financial.
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Finished.
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Finland.
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Finnish.
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A membranous appendage extending from the body of a fish or other aquatic animal, used for propelling, steering, or balancing the body in the water.
noun
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One of the winglike or paddlelike parts of a fish, dolphin, or whale that are used for propelling, steering, and balancing in water.
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A raised source-to-drain channel in a transistor. See FinFET and transistor.
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The ISO 3166-1 three-letter (alpha-3) code for Finland.
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Commune in the Somme department in France.
pronoun
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Something resembling a fin in shape or function, as:
  • A covering for the foot having a flat flexible portion made of rubber or plastic that widens as it extends forward from the toes, used to provide enhanced propulsion in swimming and diving.
  • A fixed or movable airfoil used to stabilize an aircraft, missile, or projectile in flight.
  • A thin, usually curved projection attached to the rear bottom of a surfboard for stability.
  • A projecting vane used for cooling, as on a radiator or an engine cylinder.
noun
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Anything like a fin in shape or use.
  • Any narrow edge or ridge formed in manufacturing, as on a casting by metal forced through the halves of the mold.
  • Any vertical airfoil, fixed or movable, whose chief function is to give stability in flight.
  • A stabilizing or steering projection on boats or submarines.
  • A hand or arm.
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To move the fins, esp. in a violent way.
verb
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A five-dollar bill.
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The end; finish; conclusion.
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Origin of fin

Yiddish finf five from Old High German funf, finf penkwe in Indo-European roots