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rubstone

[ ruhb-stohn ]

noun

  1. a stone, especially a whetstone, used for polishing or sharpening.


rubstone

/ ˈrʌbˌstəʊn /

noun

  1. a stone used for sharpening or smoothing, esp a whetstone
“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


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Word History and Origins

Origin of rubstone1

late Middle English word dating back to 1400–50; rub, stone

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