thresher shark

noun

: a large nearly cosmopolitan shark (Alopias vulpinus) that has a greatly elongated curved upper lobe of the tail which is often used to thresh the water to round up the schooling fish on which it feeds see shark illustration

Examples of thresher shark in a Sentence

Recent Examples on the Web
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Yet another thresher shark washed up dead on a Cape beach over the weekend — the second shark that was recently found stranded on a bay beach. Rick Sobey, Boston Herald, 9 Dec. 2025 The organization said strandings of thresher sharks are particularly common during the colder months along the shores of Cape Cod. Bonny Chu, FOXNews.com, 4 Dec. 2025 The shipment − valued by the National Police of Peru at more than $11.2 million on the international market − included fins from species including blue sharks and thresher sharks. Natalie Neysa Alund, USA Today, 21 Nov. 2025 Elphinstone Reef consistently ranks among the world’s best dive sites thanks to its abundance of healthy soft corals and frequent shark sightings, including the chance to see everything from thresher sharks to scalloped hammerheads. Terry Ward, AFAR Media, 11 Sep. 2025 Once made official, this would shatter the state record for thresher shark, the mark was set in 2006 by Mark Hiller at 467 pounds, according to the DEEP saltwater state fish record book. Sean Krofssik, Hartford Courant, 4 Aug. 2025 Just a few months earlier, another thresher shark was found dead on a beach in Devon, hinting at a troubling trend for this vulnerable species. Melissa Cristina Marquez, Forbes, 6 Jan. 2025 The dead thresher shark was moved from Par Beach to be studied. Aspen Pflughoeft, Miami Herald, 3 Jan. 2025

Word History

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of thresher shark was in 1888

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Cite this Entry

“Thresher shark.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thresher%20shark. Accessed 19 Dec. 2025.

Kids Definition

thresher shark

noun
: a large shark that has a very long curved upper lobe on its tail which it often uses in rounding up and stunning fish to feed on

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