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
finless, adjectivefinlike, adjective

Definition 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

Definition for fin (3 of 4)

fin.

abbreviation

finance.
financial.
finish.

Definition for fin (4 of 4)

Fin.

abbreviation

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

British Dictionary definitions for fin (1 of 5)

fin1
/ (fɪn) /

noun

verb fins, finning or finned

finless, adjective
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
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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