Synonyms and related words :
abatis, advanced work, arm, armor, armor-plate, balistraria, bang, bank, banquette, bar, barbed-wire entanglement, barbican, barrier, bartizan, bastion, batten, batten down, battle, battlement, blank wall, block, block up, blockade, bolt, breastwork, bulwark, button, button up, casemate, castellate, cheval-de-frise, chock, choke, choke off, circumvallation, clap, close, close off, close tight, close up, constrict, contain, contract, contravallation, counterscarp, cover, crenellate, crowd, curtain, debar, demibastion, dig in, dike, dog, drawbridge, earthwork, embattle, enclosure, entanglement, entrench, escarp, escarpment, fasten, fence, fieldwork, fold, fold up, fortalice, fortification, fortify, garrison, glacis, jam, key, latch, lock, lock out, lock up, loophole, lunette, machicolation, man, man the garrison, mantelet, merlon, mine, mound, obstruct, occlude, outwork, pack, padlock, palisade, parados, parapet, plumb, portcullis, postern gate, rampart, ravelin, redan, redoubt, roadblock, sally port, scarp, sconce, seal, seal off, seal up, secure, shut, shut off, shut out, shut the door, shut tight, shut up, slam, snap, squeeze, squeeze shut, stifle, stockade, stop, stop up, strangle, strangulate, suffocate, tenaille, vallation, vallum, wall, work, zip up, zipper