S: (n) embankment (a long artificial mound of stone or earth; built to hold back water or to support a road or as protection)
S: (n) levee (an embankment that is built in order to prevent a river from overflowing)
S: (n) rampart, bulwark, wall (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"
S: (n) sconce (a small fort or earthwork defending a ford, pass, or castle gate)
S: (n) fraise (sloping or horizontal rampart of pointed stakes)
S: (n) merlon (a solid section between two crenels in a crenelated battlement)
S: (n) Antonine Wall (a fortification 37 miles long across the narrowest part of southern Scotland (between the Firth of Forth and the Firth of Clyde); built in 140 to mark the frontier of the Roman province of Britain)