Source : Webster's Revised Unabridged Dictionary (1913)

Mummer \Mumm"er\, n. [Cf. OF. mommeur. See {Mumm}, and cf.
   {Momier}.]
   One who mumms, or makes diversion in disguise; a masker; a
   buffon.

         Jugglers and dancers, antics, mummers.   --Milton.

Source : WordNet®

mummer
     n : an actor who communicates entirely by gesture and facial
         expression [syn: {mime}, {mimer}, {pantomimer}, {pantomimist}]