STOOL PIGEON
NOUNS, PERSON
1846 ► a stool pigeon; a police spy → DOG → US criminals’ sl.
1860 ► a stool pigeon or informer → NARK → Brit. sl.
E20 ► a stool pigeon → FINK → US sl.
1903 ► a stool pigeon; a prison informer → BELCHER → US criminals’ sl.
1925 ► a stool pigeon → BUTTON → US sl.
1929 ► a stool pigeon; an informer → CANARY → US sl.
1940 ► a stool pigeon → ZUCH → US criminals’ sl.
1945 ► a stool pigeon → BIRD → criminals’ sl. (Bk.)
1951 ► a stool pigeon → GEEPO → US sl.
1982 ► a stool pigeon, a betrayer, an informer → MOSER → Jewish (Bk.)
VERBS
1860 ► to act as a police informer or stool pigeon → NARK → UK sl.
Lexicophilia 