Another word for defense
An act or means of defending
resistance, protection, safeguard, aegis, preservation, security, custody, guard, shield, barrier, bumper, buffer, stand, front, backing, advocacy, support, maintenance, guardianship, the defensive, precaution, antitoxin, inoculation, excusing, apologizing, explaining, justifying, exoneration, explanation; see also justification.
A means or system for defending against an enemy
Means or systems of military defense include: trench, Maginot line, Siegfried line, Hindenburg line, defense in depth, bulwark, palisade, dike, stockade, machine-gun nest, bastille, bastion, fortification, fort, breastworks, chemical and biological warfare, CBW, earthworks, bunker, foxhole, redoubt, barricade, garrison, blockhouse, picket, rampart, fence, wall, embankment, scarp, citadel, fortress, armor, antiaircraft, Antiballistic Missile System, ABM, distant early warning line, DEW, Strategic Defense Initiative, SDI, Star Wars*, camouflage, gas mask, shield, screen, helmet, barbed wire, stronghold, parapet, buttress, moat, fosse, counterattack, counterblow, rolling defense, tank trap, strong point, defense arc;
In law, the reply of the accused
denial, plea, pleading, rejoinder, answer, reply, retort, writ of mandamus, right of habeas corpus, alibi, testimony, vindication, surrejoinder, counterclaim, rebuttal, argument, assertion, case; see also declaration 2, proof 1, statement 1.