defensive structure Definition

defense, defence, crownwork, fortification, hornwork, barmkin, fortalice, castellate, refortification, fortress, castellation, propugnacle, afforcement, caponier, terreplein, counterguard, tenaille, rampart, guerite, embattail, contravallation, vauntmure, batardeau, demigorge, bacule, tower of london, bastion, casern, brattishing, stronghold, castle, fortify, castlery, battlement, peelhouse, tenaillon, citadel, fortlet, bastle, caponiere, escarp, military post, blockhouse, fortifiable, priestcap, propugn, castlet, fort, siegework, interdome, edifice, superstruction, turret, munify, turriculate, zeriba, edificial, vaimure, castlebuilder, cordon off, bulwark, control tower, vallation, impregnable, crenelle, butment, recipiangle, orillon, outguard, tower, parapet, polylith, sentry box, redoubt, castellated, moat, camerate, slype, outsentry, edificant, antonine wall, brisure, cunette, garrison, fire tower, defense system, estacade, constructure, build, beild, upbuild, viatecture, stockade, breastwork, hypaspist, monopteros, strongpoint, outpost, systyle, trestlework,