tail fin

noun

Definition of tail fin 

1 : the terminal fin of a fish or cetacean

Examples of tail fin in a Sentence

Recent Examples on the Web

With its large, bulbous body and small tail fins, the XM-388 looked like a cartoon caricature of a bomb. Kyle Mizokami, Popular Mechanics, "The Time Bobby Kennedy Watched the Smallest Nuclear Explosion Ever," 2 May 2016 Intel’s machine learning and modified facial recognition software also allow the drone to recognize a particular whale’s fluke print, a pattern of nicks and other imperfections in a tail fin that are as personal as a human’s fingerprint. Jeffrey Kluger, Time, "How Drones Are Helping Scientists Study and Protect Endangered Whales," 31 May 2018 But the Air Canada flight descended to about 59 feet in the air, just higher than the height of a tail fin of one of the planes on the ground. Bart Jansen, USA TODAY, "Air Canada pilots who nearly landed on other planes told investigators it "didn't look right"," 2 May 2018 Boston’s Lucky the Leprechaun shows on the tail fin as well as next to the JetBlue logo on each side of the plane. Ben Mutzabaugh, USA TODAY, "JetBlue paints Airbus A320 in colors of NBA's Boston Celtics," 7 May 2018 In all, the B-52H flew for five hours without a tail fin. Kyle Mizokami, Popular Mechanics, "The Time a B-52 Landed Without a Tail Fin," 1 Aug. 2017 The living coelacanth is just like its 300-million-year-old fossil relatives with lobed-fins and a distinctive elongate middle portion of the caudal or tail fin. Lynne Parenti, Smithsonian, "How the Smithsonian’s Coelacanth Lost Its Brain and Got It Back Again," 14 Mar. 2018 From the looks of it—long and narrow, with a set of stubby forward fins and longer tail fins—Azarakhsh is almost identical to the AIM-9 Sidewinder infrared guided air-to-air missile. Kyle Mizokami, Popular Mechanics, "Iran's New Anti-Tank Missile Looks Awfully Familiar," 1 Mar. 2018 Every aspect of the new version will follow authentic, original specifications, including the sleek hood, wide-angle cylinder heads, quick-change brake calipers, and unmistakable tail fin. Hannah Elliott, Bloomberg.com, "Jaguar Will Make 25 New D-Type Roadsters for Die-Hard Devotees," 7 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tail fin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of tail fin

1681, in the meaning defined at sense 1

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Time Traveler for tail fin

The first known use of tail fin was in 1681

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More Definitions for tail fin

tail fin

noun

English Language Learners Definition of tail fin

: a fin at the back end of a fish, whale, etc.

: a decorative part on the back of a car that is shaped like a fish's fin

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