buckler

means or method of defending a strong and free press is our best buckler against tyranny Synonyms aegis (also egis), ammunition, armor, defense, cover, guard, protection, safeguard, screen, security, shield, wall, wardRelated Words arm, armament, munitions, weapon, weaponry; fastness, fort, fortress, palisade, strongholdNear Antonyms aggression, assault, attack, offense (or offence), offensive