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grindstone

American  
[grahynd-stohn] / ˈgraɪndˌstoʊn /

noun

  1. a rotating solid stone wheel used for sharpening, shaping, etc.

  2. a millstone.

idioms

  1. keep / put one's nose to the grindstone, to work, study, or practice hard and steadily or to cause someone to do so.

    If I put my nose to the grindstone, I'll finish the job this week.
grindstone British  
/ ˈɡraɪndˌstəʊn /

noun

    1. a machine having a circular block of stone or composite abrasive rotated for sharpening tools or grinding metal

    2. the stone used in this machine

    3. any stone used for sharpening; whetstone

  2. another name for millstone

  3. to work hard and perseveringly

"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
grindstone More Idioms  

  1. see nose to the grindstone.

Etymology

Origin of grindstone

1175–1225; Middle English. See grind, stone

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.