The narrow passage from the mouth to the pharynx, situated between the soft palate and the base of the tongue.
That portion of the interior of a spiral shell which can be seen by looking into the aperture.
The throat of a calyx, corolla, etc.
The part of the face below the mouth; the jaw.
Specifically, the bone therein; the mandible of humans and other vertebrates that, with the cranium, composes the skull.