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whetstone

American  
[hwet-stohn, wet-] / ˈʰwɛtˌstoʊn, ˈwɛt- /

noun

  1. a stone for sharpening cutlery or tools by friction.

  2. anything that sharpens.

    a whetstone for dull wits.


whetstone British  
/ ˈwɛtˌstəʊn /

noun

  1. a stone used for sharpening edged tools, knives, etc

  2. something that sharpens

"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

Etymology

Origin of whetstone

before 900; Middle English whetston, Old English hwetstān. See whet, stone

Vocabulary lists containing whetstone

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.

Martin’s “A Game of Thrones” series, said, “A mind needs books as a sword needs a whetstone, if it is to keep its edge.”

From Los Angeles Times • Nov. 30, 2025

Whatever knife you choose, buy a honing rod, sharpening steel or whetstone.

From Washington Times • Jun. 9, 2023

Over the past two million years huge sheets of ice ground the landscape of central Illinois to a whetstone flatness.

From Scientific American • Feb. 13, 2023

Activities that demand focus and industry are the whetstone to keeping cognition sharp, Merrill says.

From Washington Post • Dec. 19, 2022

You got a whetstone around, I could sharpen it for you.”

From "Shiloh" by Phyllis Reynolds Naylor