Definition of face fly in English:

face fly


North American
  • The fly Musca autumnalis (family Muscidae), resembling the house fly, which gathers in large numbers on the faces of cattle and other livestock and feeds on secretions and open wounds; also called (especially British) autumn fly.

    The fly is native to Eurasia, but was introduced in the 1950s to North America, where it has become a serious pest.


1950s; earliest use found in The Lima News.