stoolieSEE DEFINITION OF stoolie
EXAMPLES FROM THE WEB FOR STOOLIE
But remember, if he's a stoolie, you're the bird that's going to get it.
"police informer," 1868, American English; earlier "one who betrays the unwary (or is used to betray them)," 1821, originally a decoy bird (1812); said to be from decoys being fastened to stools to lure other pigeons. But perhaps related to stall "decoy bird" (c.1500), especially "a pigeon used to entice a hawk into the net" (see stall (n.2)). Also cf. pigeon.