noun
mustache
MUS-tash/ˈmʌstæʃ/
Facial hair grown on the upper lip.
He has a mustache above his upper lip.

Etymology
Greek mystax named the upper lip as well as its hair, connecting the facial feature with its covering. A diminutive of that word supplied the ancestor of English mustache.
In context
the hair lip scar was completely concealed by his mustache
More examples
- Her grandfather had a thick white mustache.
- The actor grew a mustache for the role.
- Several of the men wore neatly trimmed mustaches.
Forms
mustache · mustaches
mustached adjective — having a mustache
Similar words
- beard
- Hair on the chin and cheeks rather than the upper lip.