Definition of: refine

(ri·fīn′) v. ·fined, ·fin·ing v.t.
1. To make fine or pure; free from impurities or extraneous matter.
2. To make polished or cultured; free from coarseness or vulgarity.
—v.i.
3. To become fine or pure.
4. To become more polished or cultured.
5. To make fine distinctions; use subtlety. See synonyms Under CHASTEN, PURIFY.
—re·fin′er noun