Definition of rubstone

: a sandstone or grit for scouring, polishing, or sharpening especially : whetstone

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First Known Use of rubstone

1520, in the meaning defined above

History and Etymology for rubstone

Middle English rubston, from rubben to rub + ston, stoon stone

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The first known use of rubstone was in 1520

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Cite this Entry

“Rubstone.” Dictionary, Merriam-Webster, Accessed 20 Feb. 2020.

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