1
: a marine bivalve mollusk (especially genus Mytilus) usually having a dark elongated shell
2
: a freshwater bivalve mollusk (as of Unio, Anodonta, or related genera) that is especially abundant in rivers of the central U.S. and has a shell lined with mother-of-pearl

Examples of mussel 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.
What followed was an idyllic few months spent picking mussels on the beach and taking boats out into the Celtic Sea to catch lobsters. — Daniel Rodgers, Vogue, 6 Nov. 2026 Snow crab legs, green mussels and big shrimp boil are options for the Cajun side, while pho options include pho dac biet (a combination of beef cuts), pho tai san (seafood mix) and pho ga (tender chicken). — Noelle Alviz-Gransee, Kansas City Star, 3 Nov. 2026 So that may translate into a mussel atop a smear of Malört cheese. — John Kessler, Chicago Tribune, 3 Nov. 2026 Crabs and mussels, prehistoric bugs, bits of seaweed, tiny minnows, they all get deposited, then stranded, in the cracks and crevices on top of these massive rocks. — Literary Hub, 2 Nov. 2026 See All Example Sentences for mussel

Word History

Etymology

Middle English muscle, from Old English muscelle, from Vulgar Latin *muscula, from Latin musculus muscle, mussel

First Known Use

before the 12th century, in the meaning defined at sense 1

Time Traveler
The first known use of mussel was before the 12th century

Browse Nearby Words

Cite this Entry

“Mussel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mussel. Accessed 14 Nov. 2026.

Kids Definition

1
: any of various edible saltwater mollusks with a long dark hinged double shell
2
: any of numerous freshwater mollusks of rivers of the central U.S. whose hinged double shells are lined with mother-of-pearl

More from Merriam-Webster on mussel

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!