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.-the throat of a calyx, corolla, etc.-that portion of the interior of a spiral shell which can be seen by looking into the aperture.-of faux