Open English Wordnet
Nouns
(n)defense mechanism, defense reaction, defence mechanism, defence reaction, defense, defence(psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires
(n)defense, defence, defending team(sports) the team that is trying to prevent the other team from scoring“his teams are always good on defense”
(n)defense, defence, defense team, defense lawyersthe defendant and their legal advisors collectively“the defense called for a mistrial”
(n)defense, defence, defense force, defence forcean organization of defenders that provides resistance against attack“he joined the defense against invasion”
(n)refutation, defense, defencethe speech act of answering an attack on your assertions“his refutation of the charges was short and persuasive”, “in defense he said the other man started it”
(n)defense, defence, vindicationthe justification for some act or belief“he offered a persuasive defense of the theory”
(n)defensive structure, defense, defencea structure used to defend against attack“the artillery battered down the defenses”
(n)defense, defence, defensive measure(military) military action or resources protecting a country against potential enemies“they died in the defense of Stalingrad”, “they were developed for the defense program”