defense

noun:

1. A prohibition; a prohibitory ordinance.
2. Government policy or (infra)structure related to the military.
3. The portion of a team dedicated to preventing the other team from scoring; contrasted with offense.
4. An argument in support or justification of something.
5. The case presented by the defendant in a legal proceeding.
6. A strategy and tactics employed to prevent the other team from scoring; contrasted with offense.
7. Anything employed to oppose attack(s).
8. The lawyer or team thereof who presents such a case.
9. The action of defending or protecting from attack, danger, or injury.