[ grahynd-stohn ]
/ ˈgraɪndˌstoʊn /


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

Idioms for grindstone

    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.

Origin of grindstone

1175–1225; Middle English. See grind, stone Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for grindstone

British Dictionary definitions for grindstone

/ (ˈɡraɪndˌstəʊn) /


  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
another name for millstone
keep one's nose to the grindstone or have one's nose to the grindstone 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

Idioms and Phrases with grindstone


see nose to the grindstone.

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