a rat fink



a rat fink

  (American informal)
an extremely unpleasant person, or someone who has given secret information about you to the police If I find the rat fink who informed on me, he won't live long enough to do it again.
See also: fink, rat

Common Names:

NameGenderPronouncedUsage
Amy['eimi]
Phokas-Ancient Greek
Hubert['hju:bət]
DorcasDAWR-kəs (English)Biblical
Kealoha-Hawaiian
StirlingSTUR-lingEnglish (Rare)