#embankment  a long artificial mound of stone or earth; built to hold back water or to support a road or as protection
  supertype:  #mound__hill  structure consisting of an artificial heap or bank usually of earth or stones; "they built small mounds to hide behind"
  subtype:  #rampart  an embankment built around a space for defensive purposes; "they stormed the ramparts of the city"; "they blew the trumpet and the walls came tumbling down"
  part:  #revetement__revetment__stone_facing__stonefacing  a facing (usually masonry) that supports an embankment

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