refine

verb ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about refine at Wordnik → Where our words come from →

1. To purify; reduce to a fine, unmixed, or pure state; to free from impurities.

   to refine gold

2. To become pure; to be cleared of impure matter.
3. To purify of coarseness, vulgarity, inelegance, etc.; to polish.

   to refine someone's manners