n.
Variant: also mous · tache
Pronunciation: ' m ə s- ˌ tash, ( ˌ )m ə - ' stash
Function: noun
Etymology: Middle French moustache, from Old Italian mustaccio, from Middle Greek moustaki, diminutive of Greek mystak-, mystax upper lip, mustache
Date: 1585
1 : the hair growing on the human upper lip especially : such hair grown and often trimmed in a particular style
2 : hair or bristles about the mouth of a mammal
– mus · tached also mous · tached adjective