mouser
Americannoun
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an animal that catches mice.
Our cat is a good mouser.
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a person or thing that seeks or prowls, as if for prey.
noun
Etymology
Origin of mouser
Middle English word dating back to 1350–1400; see origin at mouse, -er 1
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
On Saturday came sad news that Palmerston, a black-and-white cat, once mouser to the Foreign Office and "Diplocat extraordinaire", had passed away in Bermuda where he retired in 2020.
From Barron's • Feb. 15, 2026
Palmerston, the former "chief mouser" of the Foreign Office, has died in Bermuda.
From BBC • Feb. 14, 2026
I wrote about Charlie in The Backstory, because I can truthfully state that Charlie was the best cat ever, and the best mouser ever.
From Seattle Times • Mar. 3, 2023
He also developed an antagonistic relationship with the Foreign Office’s own mouser, Palmerston, who has since retired from public duty.
From New York Times • Sep. 6, 2022
“There’s a new electronic mouser on the market,” he volunteered.
From "Ralph S. Mouse" by Beverly Cleary
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
