We don't have synonyms for refin yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are rein, resin and refit.
°To purify from what is gross, coarse, vulgar, inelegant, low, and the like; to make elegant or excellent; to polish; as, to refine the manners, the language, the style, the taste, the intellect, or the moral feelings.
°To purify from what is gross, coarse, vulgar, inelegant, low, and the like; to make elegant or excellent; to polish; as, to refine the manners, the language, the style, the taste, the intellect, or the moral feelings.