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rub up

British  

verb

  1. to refresh one's memory (of)

  2. (tr) to smooth or polish

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

But dreams of seamless cross-country journeys rub up against a fragmented network broken into national systems that critics say create hurdles and pushes up costs.

From Barron's May 13, 2026

In that extreme environment, the largest and smallest things in the universe rub up against one another.

From Scientific American Jun. 22, 2023

As the star swelled, a companion object began to rub up against its outer layers, heating them up and causing them to brighten in the infrared.

From Science Magazine May 3, 2023

Kristensen said the more numerous Chinese submarine deployments have meant the PLA and U.S. militaries increasingly "rub up" against each other - increasing the odds of accidental conflict.

From Reuters Apr. 4, 2023

Most earthquakes occur when sections of the earth’s crust far below the surface rub up against one another, get stuck, and then jerk free all at once.

From "Mountain of Fire" by Rebecca E. F. Barone

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