terreplein Meaning, Definition & Usage

  1. noun level space where heavy guns can be mounted behind the parapet at the top of a rampart

WordNet

Terre"plein` noun
Etymology
F., fr. L. terra earth + planus even, level, plain.
Definitions
  1. (Fort.) The top, platform, or horizontal surface, of a rampart, on which the cannon are placed. See Illust. of Casemate.

Webster 1913