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



BrE BrE//ɪnˈfɔːmə(r)//
; NAmE NAmE//ɪnˈfɔːrmər//
jump to other results
a person who gives information to the police or other authority The bomber turned (= became) police informer to escape prison. One of the gang members had turned informer.
See the Oxford Advanced American Dictionary entry: informer