fenestra of the vestibule(n = noun.body) fenestra ovalis, fenestra vestibuli, oval window - fenestra that has the base of the stapes attached to it;
is a kind of fenestra

artery of the vestibule bulb, fenestra, fenestra cochleae, fenestra of the cochlea, fenestra ovalis, fenestra rotunda, fenestra vestibuli, vestibule, vestibule of the ear, vestibule of the vagina