rub up

verb
rubbed up; rubbing up; rubs up

Definition of rub up

transitive verb

1 : to revive or refresh knowledge of : recall
2 : to improve the keenness of (a mental faculty)

First Known Use of rub up

circa 1571, in the meaning defined at sense 1

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Time Traveler for rub up

Time Traveler

The first known use of rub up was circa 1571

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Cite this Entry

“Rub up.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/rub%20up. Accessed 18 January 2020.

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