articulator

noun

1. One who, or that which, articulates or expresses.

   “He’s got a point; the same qualities that make Exxon Mobil the world’s best producer of oil and gas also cause it to be a terrible articulator of its own message.”

2. One who articulates bones and mounts skeletons.
3. A mechanical device to which casts of the teeth are fixed, reproducing recorded positions of the mandible in relation to the maxilla.
4. Any organ in the vocal tract used to articulate, produce speech.