Self-Defense
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In criminal law. The protection of one's person or property against some injury attempted by another. The right of such protection. An excuse for the use of force in resisting an attack on the person, and especially for killing an assailant.
See Whart Crim. Law, §§ 1019, 1026.