Scarp.
(Fortification.) The interior slope or wall of the ditch at the foot of the parapet. It is hidden from the enemy by the glacis. See parapet; escarp. The scarp and counterscarp were used by the early Egyptians, and also the parallel wall in the ditch. They were originally contrived against the movable towers of assailants; but favorable banks or recesses in the ground must always have been welcome to those who fought with missiles.