noun
or mus·tache ˈməˌstash, _məˈs-, -taa(ə)sh, -taish also ˌməˈs- or -tȧsh
( -s )
Etymology: Middle French moustache, from Old Italian mustaccio, mostaccio, mostacchio, from Middle Greek moustaki, from Greek (Doric) mystak-, mystax upper lip, moustache; akin to Greek (Attic) mastax mouth, jaws — more at mouth
1. : the hair growing on a man's or a woman's upper lip or that on either side of the upper lip
a pair of moustaches
2. : something that resembles a moustache: as
a. : hair or bristles growing around the mouth of an animal
b. : a conspicuous stripe of color on the side of the head beneath the eye of a bird