What is the exterior slope or wall of the ditch; -- sometimes, the whole covered way, beyond the ditch, with its parapet and glacis; as, the enemy have lodged themselves on the counterscarp called?

counterscarf — The exterior slope or wall of the ditch; -- sometimes, the whole covered way, beyond the ditch, with its parapet and glacis; as, the enemy have lodged themselves on the counterscarp. (Webster's 1913.)