Pronunciation: (ri-prī'zul),[key] —n. 1. (in warfare) retaliation against an enemy, for injuries received, by the infliction of equal or greater injuries.
2. an act or instance of retaliation.
3. the action or practice of using force, short of war, against another nation, to secure redress of a grievance.
4. the forcible seizure of property or subjects in retaliation.