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.

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whetstone British  

/ ˈwɛtˌstəʊn /

noun

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

2. something that sharpens

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Etymology

Origin of whetstone

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

Example Sentences

You can maintain your knives at home with a whetstone and a little patience, but many cities also have excellent sharpening options — from specialty shops to culinary stores to hardware counters.

From Salon

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

Cordelia’s signature quirk keeps the tone featherlight while doubling as a whetstone; she constantly reminds us that training our focus on the tiniest details about elusive creatures unlocks puzzles.

From Salon

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

From Washington Times

Meyers' "Late Show" is an extension of his experience hosting "Weekend Update," but it's fair to say that its harder edge was sharpened on the "Daily Show" whetstone.

From Salon