Fin definition

fĭn
finned finning fins
See word origin
Frequency:
A five-dollar bill.
noun
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3
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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Finnish.
abbreviation
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To equip with fins.
verb
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To emerge with the fins above water.
verb
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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.
verb
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Finland.
abbreviation
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Finnish.
abbreviation
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The end; finish; conclusion.
noun
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1
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Any of several winglike, membranous organs on the body of a fish, dolphin, etc., used in swimming, turning, and balancing.
noun
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Finished.
abbreviation
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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
3
0
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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Finance.
abbreviation
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Financial.
abbreviation
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(geo, proper, place) Finland.
abbreviation
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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
2
1
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.
  • (slang) A hand or arm.
noun
2
1
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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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 ISO 3166-1 three-letter (alpha-3) code for Finland.
symbol
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Commune in the Somme department in France.
pronoun
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To move the fins, esp. in a violent way.
verb
1
2
(slang) A five-dollar bill.
noun
1
2
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Other Word Forms

Noun

Singular:
fin
Plural:
fins

Origin of fin

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

    From American Heritage Dictionary of the English Language, 5th Edition

  • Middle English from Old English finn

    From American Heritage Dictionary of the English Language, 5th Edition

Fin Sentence Examples

  • The dorsal fin, near the middle of the back, is low and triangular.

  • His great reputation and his diplomatic experience gave a special weight to the attacks which he published on the policy of the continental allies, two of his works attracting special attention, Du Congres de Troppau ou Examen des pretentions des monarchies absolues a l'egard de la monarchie constitutionelle de Naples (Paris, 1821), and Les Cabinets et les peuples depuis 1815 jusqu'd la fin de 1822 (Paris, 1822).

  • Dean said as the others returned to work, Rita shaking her head in disgust and Harrigan trying to talk on the phone by sticking a fin­ger in one ear.

  • On the other hand, in discussing the ontological argument, Lotze commits himself to a moral a priori (below, ad fin.).

  • The Heteropoda exhibit a series of modifications in the form and proportions of the visceral mass and foot, leading from a condition readily comparable with that of a typical Pectinibranch such as Rostellaria, with the three regions of the foot strongly marked and a coiled visceral hump of the usual proportions, up to a condition in which the whole body is of a tapering cylindrical shape, the foot a plate-like vertical fin, and the visceral hump almost completely atrophied.

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Words near fin in the Dictionary