Illustration of flea
: any of an order (Siphonaptera) of small wingless bloodsucking insects that have a hard laterally compressed body and legs adapted to leaping and that feed on warm-blooded animals
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Examples of flea in a Sentence
Recent Examples on the Web
This includes fur from pets treated for flea and tick prevention.
—
Madeline Buiano, Martha Stewart, 10 Mar. 2026
That includes preventive treatments for fleas and ticks and heartworm and vaccinations for parvo, distemper and rabies, says Kohl.
—Arricca Elin Sansone, Southern Living, 9 Mar. 2026
Snow fleas, also called springtails, are a common sight during the colder months.
—Stephen Underwood, Hartford Courant, 19 Feb. 2026
Many of the other dogs showed signs consistent with long-term outdoor neglect, including parasites, dental issues, and untreated medical conditions such as Giardia, fleas, and ticks.
—Moná Thomas, PEOPLE, 4 Feb. 2026
See All Example Sentences for flea
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Madeline Buiano, Martha Stewart, 10 Mar. 2026
That includes preventive treatments for fleas and ticks and heartworm and vaccinations for parvo, distemper and rabies, says Kohl.
—Arricca Elin Sansone, Southern Living, 9 Mar. 2026
Snow fleas, also called springtails, are a common sight during the colder months.
—Stephen Underwood, Hartford Courant, 19 Feb. 2026
Many of the other dogs showed signs consistent with long-term outdoor neglect, including parasites, dental issues, and untreated medical conditions such as Giardia, fleas, and ticks.
—Moná Thomas, PEOPLE, 4 Feb. 2026
See All Example Sentences for flea
Cite this Entry
“Flea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flea. Accessed 17 Mar. 2026.
Copy CitationKids Definition
flea
noun
: any of an order of small wingless bloodsucking insects with a hard body and legs used for leaping
Medical Definition
flea
noun
: any of the order Siphonaptera comprising wingless bloodsucking insects that have a hard laterally compressed body and legs adapted to leaping and that feed on warm-blooded animals see cat flea, chigoe sense 1, dog flea, rat flea, sand flea, sticktight flea
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