earthworm

noun

earth·​worm ˈərth-ˌwərm How to pronounce earthworm (audio)
: a terrestrial annelid worm (class Oligochaeta)
especially : any of a family (Lumbricidae) of numerous widely distributed hermaphroditic worms that move through the soil by means of setae and feed on decaying organic matter

Examples of earthworm in a Sentence

Recent Examples on the Web
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Unlike earthworms, which enrich the soil, Asian Jumping Worms devour everything, stripping soil and damaging plant roots. Maria Braganini, CBS News, 25 Apr. 2026 While a lot of earthworms benefit soil, adding nutrients and helping with aeration, the Asian jumping worm does the opposite. Adam England, PEOPLE, 23 Apr. 2026 Let’s also look after our helpers — the lady beetles, earthworms, birds, bees, syrphid flies and lacewings that busily help our gardens thrive. Rita Perwich, San Diego Union-Tribune, 4 Apr. 2026 There’s no easier bait to harvest than earthworms. Joe Cermele, Outdoor Life, 26 Mar. 2026 See All Example Sentences for earthworm

Word History

First Known Use

14th century, in the meaning defined above

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

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Cite this Entry

“Earthworm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/earthworm. Accessed 2 May. 2026.

Kids Definition

earthworm

noun
earth·​worm -ˌwərm How to pronounce earthworm (audio)
: a long slender annelid worm that lives in damp earth, moves with the aid of bristles, and feeds on decaying organic matter

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