To inform on, especially in betrayal of others.
To contact or cooperate with the police for any reason.
A ball used in the sport of Quidditch.
A thief.
An informer, one who betrays his group.
A nose.
A tiny morsel.
To subject (a person) to a severe scolding, interrogation, etc.
To physically attack in order to cause injury.
To improve a prototype, or first draft.