What is the meaning of Articulator?

One who, or that which, articulates or expresses.

One who articulates bones and mounts skeletons.

A mechanical device to which casts of the teeth are fixed, reproducing recorded positions of the mandible in relation to the maxilla.

Any organ in the vocal tract used to articulate, produce speech.

second/third-person singular future passive imperative of articulō

Source: wiktionary.org