Self Defence
The protection of one's person or property against some injury attempted by another.
http://legal-dictionary.thefreedictionary.com/Self-Defense
n
1. the act of defending oneself, one's actions, ideas, etc.
2. (Individual Sports & Recreations / Boxing) boxing as a means of defending the person (esp in the phrase noble art of self-defence)
3. (Law)
Law the right to defend one's person, family, or property against attack or threat of attack by the use of no more force than is reasonable
self-defensive adj
http://www.thefreedictionary.com/self-defence
: the act of defending yourself, your property, etc.
: skills that make you capable of protecting yourself during an attack
Full Definition of SELF-DEFENSE
1
: a plea of justification for the use of force or for homicide
2
:
the act of defending oneself, one's property, or a close relative
http://www.merriam-webster.com/dictionary/self-defense
noun
1.
the act of defending one's person when physically attacked, as by countering blows or overcoming an assailant: the art of self-defense.
2.
a claim or plea that the use of force or injuring or killing another was necessary in defending one's own person from physical attack: He shot the man who was trying to stab him and pleaded self-defense at the murder trial.
3.
an act or instance of defending or protecting one's own interests, property, ideas, etc., as by argument or strategy.
http://dictionary.reference.com/browse/self-defense