Definition of "Defence" :

noun: the act of defending someone or something against attack or injury

noun: protection from harm

noun: (military) military action or resources protecting a country against potential enemies

noun: a defendant's answer or plea denying the truth of the charges against him

noun: a structure used to defend against attack

noun: the justification for some act or belief

noun: the speech act of answering an attack on your assertions

noun: an organization of defenders that provides resistance against attack

noun: the defendant and his legal advisors collectively

noun: (sports) the team that is trying to prevent the other team from scoring

noun: (psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires