in fortification, a row of stones, made round on the outside, and set between the wall of the fortress which lies aloft, and the parapet which stands perpendicular, after such a manner, that this difference may not be offensive to the eye; whence the cordon serves only as an ornament, ranging round about the place, being only used in fortification of stonework. For in those made with earth, the void space is filled up with pointed flares.