a common dipterous fly, Musca domestica, that frequents human habitations, spreads disease, and lays its eggs in carrion, decaying vegetables, etc: family Muscidae
Examples of 'houseflies' in a sentence
houseflies
That's because hoverflies are related not to bees and wasps but to houseflies.
Times, Sunday Times (2014)
If you want to worry, worry more about houseflies.
Times, Sunday Times (2010)
Bluebottles are twice the size of ordinary houseflies and are a distinctive metallic blue-green colour.