Definition of "brush up" []

• To review; to improve an existing but rusty or under-developed skill. (verb)

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• ""She is one of grandpapa's guests, I can tell you," said little Ellen Chauncey; "and he says we must brush up our country manners – she's come from the great city.""
• "The Silkworm sites — I guess I better brush up on those."
• "Sometimes the Betty would come in, and the great barrel-like dress would brush up clouds of dust from the storeroom floor."