vestibulum ves·tib·u·lum (vě-stĭb'yə-ləm)
n. pl. ves·tib·u·la (-lə)
A cavity, chamber, or channel; vestibule.
But she, poor mistress mine, hears nothing of that which reaches us; the talk of the vestibulum reaches not to the peristyle.'
vestibulum ante ipsum primisque in faucibus aulæ Luctus et ultrices, posuere sedilia curæ.
There were two rooms, one called the vestibulum, for the little boys, where also instruction was given in Christian manners.
Julia glanced at his face as he came through the door of the street wall into the vestibulum or courtyard where they were waiting.
In the vestibulum are remains of the mosaic floor and frescoed walls.