Synonyms for fortification

noun

1. The process of fortification

   trench digging, consolidating, strengthening, reinforcement, defensive preparation, entrenchment, arming, defending, trenching, fortifying, buttressing, preparing bases, digging in.

2. Work prepared for defense

   fort, fortress, breastwork, defense, dugout, bunker, trench, entrenchment, gun emplacement, barricade, battlement, blockhouse, stockade, outpost, citadel, bastion, bulwark, support, outwork, wall, barrier, groin, buffer, block, barbican, earthwork, rampart, barbette, parapet, castle, stronghold, acropolis, garrison, redoubt, pillbox, riflepit, defense in depth, hedgehog defense, Maginot line.