FINK Meaning of FINK in English n. & v. US sl.n. 1 an unpleasant person. 2 an informer. 3 a strikebreaker; a blackleg. v.intr. (foll. by on) inform on. [ 20th c.: orig. unkn. ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012