Third-person singular simple present indicative form of refine.(verb)
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Use "refines" in a sentence
"When John McCain refines a position, it is called a “clarification”."
"Ralph Lauren's Face Fitness, in just one year the top-selling men's alpha-hydroxy product in department stores, says it "refines" the skin, whatever that means."
"So we can expect you to laud McCain when he "refines" his opinions?"