peacekeepingPronunciation: /ˈpiːskiːpɪŋ/Translate peacekeeping | into Italian | into Spanish Definition of peacekeeping noun [usually as modifier] the active maintenance of a truce between nations or communities, especially by an international military force:the 2,300-strong UN peacekeeping forceDerivatives peacekeeper noun peacekeeping in other Oxford dictionaries Definition of peacekeeping in the US English dictionary