stool pigeon
US /ˈstuːl ˌpɪdʒ.ən/
UK /ˈstuːl ˌpɪdʒ.ən/

1.
مخبر, جاسوس
a person who acts as a decoy or informer, especially for the police
:
•
The police used a stool pigeon to gather information on the gang.
استخدمت الشرطة مخبرًا لجمع معلومات عن العصابة.
•
He was accused of being a stool pigeon for the authorities.
اتهم بأنه مخبر للسلطات.