1
: an external membranous process of an aquatic animal (such as a fish) used in propelling or guiding the body see fish illustration
2
: something resembling a fin: such as
b(1)
: an appendage of a boat (such as a submarine)
(2)
: an airfoil attached to an airplane for directional stability
c
d
: any of the projecting ribs on a radiator or an engine cylinder
finned; finning
: to equip with fins
slang
: a 5-dollar bill
1
finance; financial
2
finish
Examples of fin in a Sentence
Recent Examples on the Web
Rebecca Alter, Vulture, 30 June 2024
Often, despite finning laws, fishermen slice a fin from a still living shark and drop the creature back into the water, to bleed to a slow and painful death on the ocean floor.
—Katherine Rundell, The New Yorker, 29 July 2024
New Atlas, 4 Nov. 2024
Fish with fins: 145 degrees or until the flesh is opaque and separates easily with a fork.
—Susan Selasky, Detroit Free Press, 26 Oct. 2024
See all Example Sentences for fin 
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Verb
Only not fin at all because Daniel springs some follow-up questions on the vamps, beginning with softballs.
—Rebecca Alter, Vulture, 30 June 2024
Often, despite finning laws, fishermen slice a fin from a still living shark and drop the creature back into the water, to bleed to a slow and painful death on the ocean floor.
—Katherine Rundell, The New Yorker, 29 July 2024
Noun
The bike also has a fake fuel tank underneath, which houses the battery pack that is disguised as engine cooling fins.
—New Atlas, 4 Nov. 2024
Fish with fins: 145 degrees or until the flesh is opaque and separates easily with a fork.
—Susan Selasky, Detroit Free Press, 26 Oct. 2024
See all Example Sentences for fin
Dictionary Entries Near fin
Cite this Entry
“Fin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fin. Accessed 1 Dec. 2024.
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