Meaning of the word nark in English

What does nark mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

nark

US /nɑːrk/
UK /nɑːk/

Noun

a police informer

Example:
The drug dealer suspected there was a nark in his crew.
Be careful what you say, there might be a nark listening.

Verb

to act as a police informer; to inform on someone

Example:
He threatened to nark on his accomplice if he didn't get a bigger cut.
Someone must have narked to the police about the illegal operation.