nark

noun

An informer, especially a police informer.

intransitive verb

To be an informer.

noun

A law enforcement agent specializing in narcotics law violations.

noun

A narcotics law enforcement officer.

noun

A police spy or informer.

verb

To annoy or irritate.

verb

To stop.

verb

To serve or behave as a spy or informer.

verb

To complain.