What is the meaning of Fein?

Misspelling of fiend.

fine (not rough, coarse, or thick)

fine; very good; as it should be

refined; posh; fancy

too good (not willing to do something or associate with it because one thinks it beneath one) [with zu (+ dative) ‘for an act’ or für (+ accusative) ‘for someone’]

hay

nice, good, fine

hay

Source: wiktionary.org