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 expose, or reveal the true character of someone.
To cease engaging in masking, to cease disguising one's autism.
To enable (an interrupt, etc.) by unsetting or setting the associated bit.
To remove a mask from someone.
To remove one's mask.