structural:summarization
Etymology

The word "moustache" is French, and is derived from the Italian mustaccio (14th century), dialectal mostaccio (16th century), from Medieval Latin mustacchium (eighth century), Medieval Greek μουστάκιον (moustakion), attested in the ninth century, which ultimately originates as a diminutive of Hellenistic Greek μύσταξ (mustax, mustak-), meaning "upper lip" or "facial hair", probably derived from Hellenistic Greek μύλλον (mullon), "lip".

An individual wearing a moustache is said to be "moustached" or "moustachioed" (the latter often referring to a particularly large or bushy moustache).