REFINE

verb (~d; refining) Date: 1582 transitive verb to free (as metal, sugar, or oil) from impurities or unwanted material, to free from moral imperfection ; elevate , to improve or perfect by pruning or polishing , to reduce in vigor or intensity, to free from what is coarse, vulgar, or uncouth, intransitive verb to become pure or perfected, to make improvement by introducing subtleties or distinctions, ~r noun