Terreplean or Terreplein: How To spell?
The word Terreplean is misspelled against Terreplein, a noun meaning "The top, platform, or horizontal surface, of a rampart, on which the cannon are placed. See Illust. of Casemate."
The word Terreplean is misspelled against Terreplein, a noun meaning "The top, platform, or horizontal surface, of a rampart, on which the cannon are placed. See Illust. of Casemate."