terreplein

A platform or level ground surface on which heavy guns are mounted.

In fortification, the top, platform, or horizontal surface of a rampart, on which the cannon are placed.

The plane of site or level surface around a field-work.

The top, platform, or horizontal surface, of a rampart, on which the cannon are placed. See Illust. of casemate.

An embankment of earth with a broad level top, which is sometimes excavated to form a continuation of an elevated canal across a valley.

A level space, often at the top of a rampart, and behind a parapet, on which artillery can be mounted

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