Related Clues:
- One who squeals
- "Was it a ___?" "Yeah, a great big one" (line from "L.A. Confidential")
- Slum scurrier
- Mafioso informer
- Vole relative
- Pack __
- Perform 2-Down
- Join the choir
- Perform with a choir
- Police informer
- ___ Pack (Sinatra and pals)
- Inform (on)
- Urban vermin
- When doubled, a New York prison
- Perform on 'American Idol,' e.g.