nark1

[nahrk] /nɑrk/
noun
1.
British Slang. a stool pigeon or informer.
2.
Australian Slang. an annoying person.
verb (used without object)
3.
British Slang. to act as a police informer or stool pigeon.
4.
Australian Slang. to become annoyed.
Origin
1860-65; < Romany nāk nose

nark2

[nahrk] /nɑrk/
noun
1.
narc.
British Dictionary definitions for nark

nark

/nɑːk/
noun
1.
(Brit & Austral, NZ) an informer or spy, esp one working for the police (copper's nark)
2.
(Brit) a person who complains irritatingly: an old nark
3.
(Austral & NZ) a spoilsport
verb
4.
(Brit & Austral, NZ) to annoy, upset, or irritate: he was narked by her indifference
5.
(intransitive) (Brit & Austral, NZ) to inform or spy, esp for the police
6.
(intransitive) (Brit) to complain irritatingly
7.
(NZ) nark at someone, to nag someone
8.
(Brit) nark it, stop it!
Word Origin
C19: probably from Romany nāk nose
Word Origin and History for nark

1859, "to act as a police informer" (v.); 1860, "police informer" (n.), probably from Romany nak "nose," from Hindi nak, from Sanskrit nakra, which probably is related to Sanskrit nasa "nose" (see nose (n.)). Sense and spelling tending to merge with etymologically unrelated narc (q.v.).

Slang definitions & phrases for nark

nark

noun
  1. A police informer; stool pigeon (1860+)
  2. kibitzer, buttinsky (1950s+)
  3. A decoy; shill: information about known gamblers, little bookmakers, and their narks (1960s+ Gambling)
verb

(also narc): He will nark on him if the first guy doesn't keep playing games/ felt the Fraynes and their youngsters had narced on them

[fr Romany nak, ''nose'']