a turd that flies out of your butt
safari guide: at 4 o' clock we can see a wild stool pigeon, a fine specimen indeed! and there is the father who appears to be shitting out one after the other.
by tardexecutioner April 19, 2011
dirty rat, rat, taddle tale, snitch,
50 cent is a stool pigeon. he snitched on Hova.
by paul January 26, 2004
A person who can be otherwise known as a Rat, Nark, or Tattle Tail. He/She suffer's the unfortunate proclivity towards debasing him/herself by engaging in sociatal suicide.
by Mathew Cunningham August 02, 2003
A stool pigeon is a person who might be a criminal or a spy sent in by the police to act as an informant.
"Hey keep your mouths shut around this new prisoner; he might be a stool pigeon!"
by azn_dude May 29, 2016