(law, humorous) Any legal strategy or propaganda strategy that seeks to overwhelm its audience with nonsensical arguments, as a way of confusing the audience and drowning out legitimate opposing arguments.

(law) A plea to the effect that from some formal defect (e.g. misnomer, lack of jurisdiction) the proceedings should be abated.

All the methods and procedures involved in defending against attack by chemical agents.

Any defensive measure against an attack by missiles etc while in space

(law) A defense against a suit or criminal charge that asserts mitigating facts rather than contesting the main fact of the allegation.

plural of space defense

plural of zone defense

plural of Chewbacca defense

(ethics, international law, idiomatic) An explanation offered as an excuse for behaving in a criminal or wrongful manner, claiming that one acted in this way because one was ordered by others (particularly superiors) to do so.

(gaming) A special move used to defend against damage. / (gaming) The capacity of a character of defending against damage through special defenses.