(ice hockey) The ice between a team's own blue line and its end board.

(basketball, soccer) A defense in which each player covers an area of the court.

(cricket) A field set with fielders in positions designed to prevent runs rather than take wickets.

(baseball) An official scoring judgement in which a runner is not credited with a stolen base because the team playing the field did not try to stop the steal. This typically occurs late in a game when the fielding team is winning by at least two runs.

(American football) Any of a few defensive positions in the middle of the defensive line.

The means of defending oneself from physical attack.

(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