vestibular

Of or pertaining to a vestibule in a building.

(anatomy) Of, pertaining to, or functioning as a vestibule (body cavity).

(anatomy) Of or pertaining to the vestibule of the inner ear and the perception of body position, balance and movement.

(dentistry) Of or pertaining to the surface of a tooth that is directed outward toward the vestibule of the mouth, including the buccal and labial surfaces, and opposite the lingual (or oral) surface.