Verb
1. improve or perfect by pruning or polishing;
"refine one's style of writing"2. make more complex, intricate, or richer;
"refine a design or pattern"3. treat or prepare so as to put in a usable condition;
"refine paper stock""refine pig iron""refine oil"4. reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities;
"refine sugar"5. attenuate or reduce in vigor, strength, or validity by polishing or purifying;
"many valuable nutrients are refined out of the foods in our modern diet"6. make more precise or increase the discriminatory powers of;
"refine a method of analysis""refine the constant in the equation"