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
Petco Petco's best deals include 40% off first repeat delivery on select flea and tick items, along with buy three or more select dog/ cat treats and get 20% off.
—
Jessica Moore, USA Today, 25 Mar. 2026
This includes dog and cat food, cat litter, treats, beds and blankets, food and water bowls, leashes and collars, puppy pads, nail trimmers, and even flea and tick prevention.
—Wendy Rose Gould, Martha Stewart, 15 Mar. 2026
They have been microchipped, vaccinated and treated for fleas and parasites.
—Maryanne Dell, Oc Register, 14 Mar. 2026
The teacher draws a tightrope separating two dimensions with an acrobat occupying the space above the tightrope, and a flea, who is able to walk both above and below the tightrope.
—Valerie Greene, The Orlando Sentinel, 14 Mar. 2026
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Jessica Moore, USA Today, 25 Mar. 2026
This includes dog and cat food, cat litter, treats, beds and blankets, food and water bowls, leashes and collars, puppy pads, nail trimmers, and even flea and tick prevention.
—Wendy Rose Gould, Martha Stewart, 15 Mar. 2026
They have been microchipped, vaccinated and treated for fleas and parasites.
—Maryanne Dell, Oc Register, 14 Mar. 2026
The teacher draws a tightrope separating two dimensions with an acrobat occupying the space above the tightrope, and a flea, who is able to walk both above and below the tightrope.
—Valerie Greene, The Orlando Sentinel, 14 Mar. 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 27 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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