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
Ichiro	ee-chee-ṙo:	Japanese
Gormflaith	-	Irish
Mirella	mee-REL-lah	Italian
ŽEljko	-	Croatian, Serbian, Slovene
Leofstan	-	Anglo-Saxon
Mohammed	[məu'hæmed]