stool pigeon

• Expresión coloquial y algo anticuada para referirse a un informante de la policía o a una persona que delata a un grupo proporcionando información a las autoridades; originalmente derivaba del uso de una paloma señuelo para atrapar a otras aves.

An old-fashioned slang term for a police informant or someone who betrays a group by providing information to authorities, originally derived from the use of a decoy pigeon to trap other birds.

1. Informant or spyC1informalamerican

   A person who secretly gives information to the police or authorities about criminal activities.

   soplón, informante

   • The gang suspected there was a stool pigeon in their midst.
   • He became a stool pigeon to avoid a long prison sentence.
   • The detective relied on a stool pigeon for inside information.