es·carp·ment /ɪˈskɑrpmənt/
 懸崖,斷崖,絕壁
 Es·carp·ment n.  A steep descent or declivity; steep face or edge of a ridge; ground about a fortified place, cut away nearly vertically to prevent hostile approach. See Scarp.
 ◄ ►
 escarpment
      n 1: a long steep slope or cliff at the edge of a plateau or
           ridge; usually formed by erosion [syn: scarp]
      2: a steep artificial slope in front of a fortification [syn: escarp,
          scarp, protective embankment]