noun.
The beard worn on the upper lip of men; the unshaven hair of the upper lip: frequently used in the plural, as if the hair on each side of the lip were to be regarded as a mustache.
noun.
. A long ringlet hanging beside the face, a part of a woman's head-dress in the seventeenth century.
noun.
In zoology:
noun.
Hairs or bristles like a mustache; whiskers; rictal vibrissæ mystaces.
noun.
A mystacine, malar, or maxillary stripe of color in a bird's plumage.