The Collaborative International Dictionary of English v.0.48:

Mawmet \Maw"met\, n. [Contr. fr. Mahomet.]
   A puppet; a doll; originally, an idol, because in the Middle
   Ages it was generally believed that the Mohammedans worshiped
   images representing Mohammed. [Obs.] --Wyclif. Beau. & Fl.
   [1913 Webster]