Source : Webster's Revised Unabridged Dictionary (1913)

Articulator \Ar*tic"u*la`tor\, n.
   One who, or that which, articulates; as:
   (a) One who enunciates distinctly.
   (b) One who prepares and mounts skeletons.
   (c) An instrument to cure stammering.

Source : WordNet®

articulator
     n 1: someone who pronounces words
     2: a movable speech organ