mouser

noun

mous·​er ˈmau̇-sər How to pronounce mouser (audio)
 US also and chiefly British  -zər
Synonyms of mousernext
: a catcher of mice and rats
especially : a cat proficient at mousing

Examples of mouser in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Bishop herself appears in the belly of an especially large robot that very vaguely resembles a mouser with arms and feels a lot like a hint at Krang, the evil brain from Dimension X that terrorized the Turtles in the 1987 cartoon series. — Wes Davis, The Verge, 9 June 2024 Aoshima, after all, hadn’t always been a cat island; once, it had been populated mostly by people, fishermen, who brought the cats over to work as mousers. — Hanya Yanagihara Kyoko Hamada, New York Times, 10 May 2023

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of mouser was in the 15th century

Rhymes for mouser

See All Rhymes for mouser

Browse Nearby Words

mouser
See all Nearby Words

Cite this Entry

“Mouser.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mouser. Accessed 26 Mar. 2025.

Copy Citation

Share

Kids Definition

mouser

noun
mous·​er ˈmau̇-zər How to pronounce mouser (audio)
: a cat good at catching mice

More from Merriam-Webster on mouser

Thesaurus: All synonyms and antonyms for mouser

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Popular in Grammar & Usage

See More

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

The Difference Between 'i.e.' and 'e.g.'

Why is '-ed' sometimes pronounced at the end of a word?

Words You Always Have to Look Up

Democracy or Republic: What's the difference?
See More

Popular in Wordplay

See More

Top 10 Sophisticated Insults

Flower Etymologies For Your Spring Garden

More Words with Remarkable Origins

Terroir, Oenophile, & Magnum: Ten Words About Wine

8 Words for Lesser-Known Musical Instruments
See More

Popular Features

See More

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Top 10 Sophisticated Insults

Flower Etymologies For Your Spring Garden
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Word Game Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A daily crossword with a twist
dog-in-disguise
Rhyme Disguise Quiz Pair up words that look different but sound alike.
See All