ventriloquist

from WordNet (r) 3.0 (2006)

ventriloquist
    n 1: a performer who projects the voice into a wooden dummy

from The Collaborative International Dictionary of English v.0.48

Ventriloquist \Ven*tril"o*quist\, n.
   One who practices, or is skilled in, ventriloquism.
   [1913 Webster]

   {Ventriloquist monkey} (Zool.), the onappo; -- so called from
      the character of its cry.
      [1913 Webster]