house·​fly | \ ˈhau̇s-ˌflī \

Definition of housefly 

: a cosmopolitan dipteran fly (Musca domestica) that is often about human habitations and may act as a mechanical vector of diseases (such as typhoid fever) also : any of various flies of similar appearance or habitat

Examples of housefly in a Sentence

Recent Examples on the Web

Besides roaches, bed bugs, head lice, houseflies, mosquitoes and other common insects in our houses have developed resistance to our pesticides. Rob Dunn, Discover Magazine, "Our Attempts to Eradicate Insects are Just Making them Resistant to Pesticides," 16 Nov. 2018 The predators hunt grubs, aphids, and houseflies — other pests that annoy at outdoor dinners and in your garden. Jean Nick, Good Housekeeping, "How to Wasp-Proof Your Backyard This Summer," 26 July 2018 Keep an eye out—particularly in the Northwest—for carrot rust flies, which look like small green houseflies with yellow heads and red eyes. The Editors Of Organic Life, Good Housekeeping, "Everything You Need To Know To Grow Beautiful Carrots," 30 Aug. 2017 The longest a housefly will last inside is about two weeks. 2. Danielle Tullo, House Beautiful, "7 Horrifying Things That Happen When a Fly Gets Into Your House," 18 June 2018 In a dusty open-air building with houseflies buzzing, Marines here received a call for help. Dan Lamothe, Washington Post, "Inside the Marines’ new mission in Afghanistan: taking back territory previously won," 16 Apr. 2018 Moore and Lucas use it like a bazooka to kill a housefly. Joey Morona,, "Gabrielle Union's 'Bad Boys' spinoff picked up by NBC," 1 Nov. 2017 If aircraft, for example, followed Moore’s Law, a loaded Boeing 777 could reach Japan from New York by burning a housefly’s weight in fuel. Mark Mills, Fortune, "The Real Reason Trump Left the Paris Agreement," 5 June 2017 In the past, the hospital’s ENT department has removed a leach, houseflies, and maggots from patients’ nasal cavities. The Washington Post, The Denver Post, "She felt a “crawling sensation.” Doctors found a live cockroach in her skull.," 13 Feb. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'housefly.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of housefly

15th century, in the meaning defined above

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Last Updated

30 Nov 2018

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The first known use of housefly was in the 15th century

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More Definitions for housefly



English Language Learners Definition of housefly

: a common fly that lives in or near people's houses


house·​fly | \ ˈhau̇s-ˌflī \
plural houseflies

Kids Definition of housefly

: a fly that is common in houses and may carry disease germs


house·​fly | \ -ˌflī \
plural houseflies

Medical Definition of housefly 

: a cosmopolitan dipteran fly of the genus Musca (M. domestica) that is often found about human habitations and may act as a mechanical vector of diseases (as typhoid fever) also : any of various flies of similar appearance or habitat

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More from Merriam-Webster on housefly

Rhyming Dictionary: Words that rhyme with housefly

Spanish Central: Translation of housefly

Nglish: Translation of housefly for Spanish Speakers Encyclopedia article about housefly

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