Definition of peacemaker noun from the Oxford Advanced Learner's Dictionary

 

peacemaker

 noun
noun
BrE BrE//ˈpiːsmeɪkə(r)//
 
; NAmE NAmE//ˈpiːsmeɪkər//
 
International relations, Peacekeeping
 
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a person who tries to persuade people or countries to stop arguing or fighting and to make peace She always acted as the peacemaker when family arguments boiled over. See related entries: International relations, Peacekeeping
See the Oxford Advanced American Dictionary entry: peacemaker