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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The kitten was in a sad condition: overheated, wounded, filthy, and covered in fleas and feces.
—
Alice Gibbs, MSNBC Newsweek, 27 July 2025
To prevent catching the plague, the WHO recommends taking precautions against flea bites and avoiding handling animal carcasses.
—Sara Hashemi, Smithsonian Magazine, 14 July 2025
People can also donate supplies—including flea and tick meds, vaccines, plastic airline kennels for medium to large dogs, potty pads, dawn dish soap, and more—by dropping them off in the main visitor parking lot at 1156 West Cesar Chavez in Austin, Texas, between 8 a.m. and 6 p.m. local time.
—Chantelle Lee, Time, 7 July 2025
Adoption cost: $400, includes microchip, vaccines, worm and flea treatment
Adoption procedure: Fill out Lovebugs Rescue’s online application.
—Maryanne Dell, Oc Register, 24 May 2025
See All Example Sentences for flea
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Alice Gibbs, MSNBC Newsweek, 27 July 2025
To prevent catching the plague, the WHO recommends taking precautions against flea bites and avoiding handling animal carcasses.
—Sara Hashemi, Smithsonian Magazine, 14 July 2025
People can also donate supplies—including flea and tick meds, vaccines, plastic airline kennels for medium to large dogs, potty pads, dawn dish soap, and more—by dropping them off in the main visitor parking lot at 1156 West Cesar Chavez in Austin, Texas, between 8 a.m. and 6 p.m. local time.
—Chantelle Lee, Time, 7 July 2025
Adoption cost: $400, includes microchip, vaccines, worm and flea treatment
Adoption procedure: Fill out Lovebugs Rescue’s online application.
—Maryanne Dell, Oc Register, 24 May 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 3 Aug. 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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