refine
C1Substantiv/US /rəfˈaɪn/ rəf-ĪN; UK /rəfˈaɪn/ rəf-ĪN/
To reduce to a fine, unmixed, or pure state; to free from impurities; to free from dross or alloy; to separate from extraneous matter; to purify; to defecate; as, to refine gold or silver; to refine iron; to refine wine or sugar.
