Overview
A moustache is a growth of facial hair grown above the upper lip and under the nose. Moustaches have been worn in various styles throughout history.
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).
History
Research done on this subject has noticed that the prevalence of moustaches and facial hair in general rise and fall according to the saturation of the marriage market. Thus, the density and thickness of the moustache or beard may help to convey androgen levels or age.
From Wikipedia (CC BY-SA 4.0).