Mus·tache n.; pl. Mustaches  [Written also moustache.]
  1. That part of the beard which grows on the upper lip; hair left growing above the mouth.
  2. Zool. A West African monkey (Cercopithecus cephus). It has yellow whiskers, and a triangular blue mark on the nose.
  3. Zool. Any conspicuous stripe of color on the side of the head, beneath the eye of a bird.
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