definition: a law enforcement officer concerned with narcotics violations
example: Narks are a special kind of police.
speech part: noun
synonyms: narc
definition: an informer or spy working for the police
example: Let's beat feet. That dude looks like a nark.
speech part: noun
synonyms: copper's nark
definition: inform or spy (for the police)
example: The gangster code requires that one never nark.
speech part: verb
definition: cause annoyance in
example: It really narks them when the neighbors blast their music until early in the morning.
speech part: verb
synonyms: rag

How nark is being used?