Source : Webster's Revised Unabridged Dictionary (1913)

Ventriloquist \Ven*tril"o*quist\, n.
   One who practices, or is skilled in, ventriloquism.

   {Ventriloquist monkey} (Zo["o]l.), the onappo; -- so called
      from the character of its cry.

Source : WordNet®

ventriloquist
     n : a performer who projects the voice into a wooden dummy