Fin Definition

fĭn
finned, finning, fins
noun
fins
Any of several winglike, membranous organs on the body of a fish, dolphin, etc., used in swimming, turning, and balancing.
Webster's New World
Anything like a fin in shape or use.
Webster's New World
A five-dollar bill.
Webster's New World
The end; finish; conclusion.
Webster's New World
verb
finned, finning, fins
To move the fins, esp. in a violent way.
Webster's New World
To equip with fins.
American Heritage
To emerge with the fins above water.
American Heritage
To swim, as a fish.
American Heritage
To lash the water with the fins. Used of a dying whale.
American Heritage
Synonyms:
abbreviation
Finance.
Webster's New World
Financial.
Webster's New World
Finland.
Webster's New World
Finished.
Webster's New World
Finnish.
Webster's New World
symbol

The ISO 3166-1 three-letter (alpha-3) code for Finland.

Wiktionary
pronoun

Commune in the Somme department in France.

Wiktionary

Other Word Forms of Fin

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

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