1. (noun)nark, copper's nark an informer or spy working for the police
2. (verb)narc, nark, narcotics agent a lawman concerned with narcotics violations
3. (verb)annoy, rag, get to, bother, get at, irritate, rile, nark, nettle, gravel, vex, chafe, devil 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"
Definition of NARK 
