1. Someone acting as an informer or decoy for the police
   "The stoolie provided crucial information that led to the arrest of the drug dealer";
   - fink [N. Amer, informal], snitch [informal], snitcher [informal], stoolpigeon [informal], stool pigeon [informal], sneak [informal], canary [N. Amer], grass [Brit, informal], snout [Brit, informal]

Derived forms: stoolies

Type of: betrayer, blabber [informal], informer, rat [informal], squealer

Encyclopedia: Stoolie