stoolie
noun/ˈstuːli/
Etymology From stool + -ie.
1
Slang A stool pigeon.
- 'Two top operatives flying down tonight. Time to get co-operation from the Police. I'll tell 'em to get their stoolies working in Tampa. This isn't only a St Petersburg job. Bye now.'1954, Ian Fleming, “Death of a Pelican”, in Live and Let Die, London: Pan Books, published 1957, page 151: