Definition of "Refine" :
verb: make more complex, intricate, or richer
"Refine a design or pattern."
verb: make more precise or increase the discriminatory powers of
"Refine a method of analysis."
verb: attenuate or reduce in vigor, strength, or intensity by polishing or purifying
"Many valuable nutrients are refined out of the foods in our modern diet."
verb: improve or perfect by pruning or polishing
"Refine one's style of writing."
verb: reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities
verb: treat or prepare so as to put in a usable condition
"Refine paper stock."