Fauces
Fauces , noun, plural
[Latin]
1.
(Anatomy) The narrow passage from the mouth to the pharynx, situated between the soft palate and the base of the tongue; -- called also the isthmus of the fauces. On either side of the passage two membranous folds, called the pillars of the fauces, inclose the tonsils.
2.
(Botany) The throat of a calyx, corolla, etc.
3.
(Zoology) That portion of the interior of a spiral shell which can be seen by looking into the aperture.