narc

IPA: nˈɑrk

(informal, colloquial, drugs) A police officer or federal agent assigned to or engaging in illegal narcotics control.
(colloquial, informal) A narcissist.
(informal, colloquial, drugs) Alternative spelling of nark (“spy”) [(Britain, Ireland, slang) A police spy or informer.]

(underwater diving, slang) To suffer from impaired judgment due to nitrogen narcosis (for example, while scuba diving).
(informal, colloquial, drugs) Alternative spelling of nark [(transitive, thieves' cant) To watch; to observe.]

Examples of "narc" in Sentences

It would be like taking the 'narc' out of narcissism.
Sure, he is a piggy, but in the sense of being a narc for the piggies yet is still allowed to rat out others.
No turning back on this road, I think - we're unlikely to have a straight-arrow 'narc' type president ever again.
He only had one tool to turn to, and that tool turned the icy professional evil minion Pussy Galore into a total narc in one go.
Once again this proves it pays to be a "narc" after your caught the first couple times, hell ... use again free, until the police are ready to bust the "big guys".
Maxfield, known nationally as a "narc" among young hackers, said he had underground sources who said Poulsen was rumored to be living alone in a southern California apartment.
"The kid who complained [last year] was then singled out for the rest of last year by fellow teammates as a 'narc' and was punched by other teammates for telling his parent," one of the sources said.