The confidence that Americans' lives and personal safety, both at home and abroad, are protected and the United States' sovereignty, political freedom, and independence, with its values, institutions, and territory intact are maintained ( synonymous with National Security).

military action or resources protecting a country against potential enemies; "they died in the defense of Stalingrad"; "they were developed for the defense program"

the 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"

A stat that helps determine whether an attack will hit. Equal to 5x your level plus any bonuses from items, spells, and/or talents.

A creature’s defense bonus or penalty is based generally on their tough hide or agility, but can also reflect magical bonuses.

In military science, defense (or defence) is the art of preventing an attack, or minimizing the damage of an attack, e.g. by preventing an enemy from conquering territory.

In first-person shooter (FPS) games, defense, in its simplest form, is the protection of a certain element or location in order to gain an advantage, either through passively waiting, or being active. Waiting would require the player to stay in a location overlooking a certain spot, in anticipation of an element (e.g. items), event (e.g. bomb-planting), or in most cases, an opposition. Being active requires constructive actions, for instance in a real time strategy (RTS) based FPS, the player on defense would construct various defensive buildings, or would scout to prepare for an attack.