I. fink 1 /fɪŋk/ BrE AmE noun [countable] American English informal old-fashioned
[ Date: 1800-1900 ; Origin: Perhaps from German , 'finch, student not belonging to a student association' ]
1 . someone who tells the police, a teacher, or a parent when someone else breaks a rule or a law
2 . a person who you do not like or respect
II. fink 2 BrE AmE verb [intransitive +on] American English informal old-fashioned
to tell the police, a teacher, or a parent that someone has broken a rule or a law SYN squeal on somebody