- Main Entry:
- house·fly

- Pronunciation:
-
\ˈhau̇s-ˌflī\
- Function:
- noun
- Date:
- 15th century
: a cosmopolitan dipteran fly (Musca domestica) that is often 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