narc

noun

A narcotics squad police officer.

1. A police spy or informer.
2. An unpleasant person, especially one who makes things difficult for others.

1. To watch; to observe.
2. To serve or behave as a spy or informer.

   “If you nark on me, I’ll rip your arms off,” said Tim to his brother, as he passed him a joint.

3. To annoy or irritate.

   It really narks me when people smoke in restaurants.

4. To complain.

   He narks in my ear all day, moaning about his problems.

5. (often imperative) To stop.

   Nark it! I hear someone coming!

verb

(underwater diving) To suffer from impaired judgment due to nitrogen narcosis (for example, while scuba diving).

noun

A narcissist.