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
Recent Examples on the Web
Officers on the scene found at least 19 dogs in poor condition, including severe flea infestations, visible tumors and signs of malnourishment.
—
Caroline Neal, Louisville Courier Journal, 22 Oct. 2025
District spokesperson Brian Heap said that the school reported site-wide a flea issue in May 2024, found to be caused by a dead animal in the garden area.
—Jennah Pendleton, Sacbee.com, 22 Oct. 2025
San Marcos tried a flea flicker on its last-gasp play, but it was sniffed out by the Carlsbad defense.
—John Maffei, San Diego Union-Tribune, 18 Oct. 2025
The water flea is actually a crustacean, not a flea, and gets its name from its swimming motion, which resembles the movements of a flea.
—Matt Nighswander, NBC news, 17 Oct. 2025
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Caroline Neal, Louisville Courier Journal, 22 Oct. 2025
District spokesperson Brian Heap said that the school reported site-wide a flea issue in May 2024, found to be caused by a dead animal in the garden area.
—Jennah Pendleton, Sacbee.com, 22 Oct. 2025
San Marcos tried a flea flicker on its last-gasp play, but it was sniffed out by the Carlsbad defense.
—John Maffei, San Diego Union-Tribune, 18 Oct. 2025
The water flea is actually a crustacean, not a flea, and gets its name from its swimming motion, which resembles the movements of a flea.
—Matt Nighswander, NBC news, 17 Oct. 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 29 Oct. 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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