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
Examples of flea in a Sentence
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Insects like mosquitoes, fleas, fire ants, sand flies, and biting midges can transmit bacterial, viral, or parasitic diseases.
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Cristina Mutchler, Verywell Health, 2 Sep. 2025
Missouri State, which was an FCS team before this season, squeaked out a field goal in its first drive of the game and had the confidence to attempt a reverse flea flicker on its next possession, but USC’s defense sniffed out the play and pushed the Bears back 11 yards.
—Haley Sawyer, Oc Register, 31 Aug. 2025
For those with pets, NMDOH recommends using an appropriate flea repellent and having sick pets examined by a veterinarian.
—Angelica Stabile, FOXNews.com, 29 Aug. 2025
Transfer to man occurs when a flea is obliged to leave its dead rodent host and feed on human blood.
—Matthew Binnicker, Forbes.com, 22 Aug. 2025
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Cristina Mutchler, Verywell Health, 2 Sep. 2025
Missouri State, which was an FCS team before this season, squeaked out a field goal in its first drive of the game and had the confidence to attempt a reverse flea flicker on its next possession, but USC’s defense sniffed out the play and pushed the Bears back 11 yards.
—Haley Sawyer, Oc Register, 31 Aug. 2025
For those with pets, NMDOH recommends using an appropriate flea repellent and having sick pets examined by a veterinarian.
—Angelica Stabile, FOXNews.com, 29 Aug. 2025
Transfer to man occurs when a flea is obliged to leave its dead rodent host and feed on human blood.
—Matthew Binnicker, Forbes.com, 22 Aug. 2025
See All Example Sentences for flea
Cite this Entry
“Flea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flea. Accessed 12 Sep. 2025.
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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