Dictionary.com

fin

1
[ fin ]
/ fɪn /
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noun
verb (used with object), finned, fin·ning.
to cut off the fins from (a fish); carve or cut up, as a chub.
to provide or equip with a fin or fins.
verb (used without object), finned, fin·ning.
to move the fins; lash the water with the fins, as a whale when dying.
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Origin of fin

1
before 1000; Middle English, Old English finn; cognate with Dutch vin,Low German finne; akin to Swedish fena

OTHER WORDS FROM fin

finless, adjectivefinlike, adjective

Other definitions for fin (2 of 4)

fin2
[ fin ]
/ fɪn /

noun
Slang. a five-dollar bill.

Origin of fin

2
1865–70; earlier finnip, finnup, fin(n)if(f) a five-pound note <Yiddish fin(e)f five <Middle High German vumf, vimf;see five

Other definitions for fin (3 of 4)

fin.

abbreviation
finance.
financial.
finish.

Other definitions for fin (4 of 4)

Fin.

abbreviation
Finland.
Finnish.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use fin in a sentence

British Dictionary definitions for fin (1 of 5)

fin1
/ (fɪn) /

noun
verb fins, finning or finned

Derived forms of fin

finless, adjective

Word Origin for fin

Old English finn; related to Middle Dutch vinne, Old Swedish fina, Latin pinna wing

British Dictionary definitions for fin (2 of 5)

fin2
/ (fɪn) /

noun
US slang a five-dollar bill

Word Origin for fin

from Yiddish finf five, ultimately from Old High German funf, finf

British Dictionary definitions for fin (3 of 5)

Fin

abbreviation for
Finland
Finnish

British Dictionary definitions for fin (4 of 5)

FIN

abbreviation for
Finland (international car registration)

British Dictionary definitions for fin (5 of 5)

fin.

abbreviation for
finance
financial
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for fin

fin
[ fĭn ]

One of the winglike or paddlelike parts of a fish, dolphin, or whale that are used for propelling, steering, and balancing in water.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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