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. Etymology: 20th c.: orig. unkn. Oxford English vocab. Оксфордский английский словарь. 2012