sing like a canary

To inform against someone to the police or other authority about his or her criminal or illicit behavior. I heard Joey Malone has been singing like a canary in the hopes of getting his sentence reduced. Let's make sure he's sleeping with the fishes before he gets the chance!

Common Names:

Name	Pronounced	Usage
Iezekiel	-	Biblical Greek
Mercury	MURK-yə-ree (English)	Roman Mythology (Anglicized)
Iohel	-	Biblical Latin
Amice	-	Medieval English
Spirit	SPIR-it	English (Rare)
Prudentius	-	Late Roman