Oxford Dictionary English peace officer noun noun BrE BrE//ˈpiːs ɒfɪsə(r)// ; NAmE NAmE//ˈpiːs ɔːfɪsər// , NAmE//ˈpiːs ɑːfɪsər// (North American English) Add to my wordlistjump to other resultsa person whose job is to make people obey the law The man was charged with possessing drugs and obstructing a peace officer.Check pronunciation: peace officer oxfordlearnersdictionaries.com