nark

n.

1.

A law enforcement agent specializing in narcotics law violations.

Noun	1.	nark - an informer or spy working for the police Synonyms: copper's nark
	2.	nark - a lawman concerned with narcotics violations Synonyms: narc, narcotics agent
Verb	1.	nark - cause annoyance in; disturb, especially by minor irritations; "Mosquitoes buzzing in my ear really bothers me"; "It irritates me that she never closes the door after she leaves" Synonyms: annoy, devil, gravel, irritate, rile, vex, nettle, rag, bother, chafe, get at, get to
	2.	nark - inform or spy (for the police)

annoy, antagonise, antagonize, beset, bother, chafe, chevvy, chevy, chivvy, chivy, devil, displease, eat into, fret, get, get at, get to, get under one's skin, grate, gravel, harass, harry, hassle, irritate, molest, nettle, peeve, plague, provoke, rag, rankle, rile, ruffle, vex