nark /ˈnɑrk/
  警察的線民,密探(vt.)(vi.)作線民,密告
  nark
       n 1: an informer or spy working for the police [syn: copper's
            nark]
       2: a lawman concerned with narcotics violations [syn: narc, narcotics
          agent]
       v 1: 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" [syn: annoy, rag, get to, bother,
             get at, irritate, rile, nettle, gravel, vex,
             chafe, devil]
       2: inform or spy (for the police)