lamprey

noun

lam·​prey ˈlam-prē How to pronounce lamprey (audio)
-ˌprā
plural lampreys
: any of a family (Petromyzontidae) of eel-shaped freshwater or anadromous jawless fishes that include those cyclostomes having well-developed eyes and a large disk-shaped suctorial mouth armed with horny teeth

called also lamprey eel

Examples of lamprey 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.
Mincemeat pies, crane, swan, brawn (terrine made with a pig’s head and served with mustard), goose and lamprey pie, and even porpoise (served dressed with vinegar and breadcrumbs) were all popular holiday fare. Hadley Hall Meares, Vanity Fair, 22 Dec. 2025 Sea lampreys are parasites, feeding by attaching to fish with their suction mouth, using their tongue to rasp a hole through the fish's skin, and consuming the blood and juices that flow out. Keith Matheny, Freep.com, 15 Dec. 2025 The workers must then expose the ecosystem to a specific concentration of poison, perfectly calibrated to kill lampreys and not many other fish, for nine uninterrupted hours. Katie Thornton, New Yorker, 24 Oct. 2025 In particular, applying pesticides and other techniques to control lamprey populations costs around $20 million per year. Christine Keiner, The Conversation, 15 Oct. 2025 See All Example Sentences for lamprey

Word History

Etymology

Middle English, from Anglo-French lampreie, from Medieval Latin lampreda

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of lamprey was in the 14th century

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Cite this Entry

“Lamprey.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lamprey. Accessed 11 Jan. 2026.

Kids Definition

lamprey

noun
lam·​prey ˈlam-prē How to pronounce lamprey (audio)
-ˌprā
plural lampreys
: any of a family of jawless fishes that resemble eels and have a large sucking mouth with horny teeth

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