tail fin

noun

1
: the terminal fin of a fish or cetacean
2
: fin sense 2b

Examples of tail fin in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Tatiana’s lack of a tail fin has resulted in bullying from her mermaid peers. — Sara Rowe Mount, Parents, 26 Dec. 2025 On a tail fin, the crew had stencilled a Playboy Bunny smoking a cigar. — Ed Caesar, New Yorker, 25 May 2026 In experiments, the scientists created gel electrodes in the brain, heart, and tail fins of living zebra fish with no signs of tissue damage. — IEEE Spectrum, 2 Mar. 2023 Crosthwaite & Gardiner report that fitting the streamlined bodywork, cockpit canopy and tail fin over the wooden frame was particularly labor-intensive. — New Atlas, 8 May 2026 See All Example Sentences for tail fin

Word History

First Known Use

1681, in the meaning defined at sense 1

Time Traveler
The first known use of tail fin was in 1681

Rhymes for tail fin

See All Rhymes for tail fin

Browse Nearby Words

tail-female
tail fin
tailfirst
See all Nearby Words

Cite this Entry

“Tail fin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tail%20fin. Accessed 7 Jul. 2026.

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