Terreplein /(?)/

Terre·plein

Terreplein

n.
  1. The top, platform, or horizontal surface, of a rampart, on which the cannon are placed. See Illust. of Casemate. (Fort.)
  2. An embankment of earth with a broad level top, which is sometimes excavated to form a continuation of an elevated canal across a valley. (Civ. Engin.)