grindstone

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grindstone

1. 
a. a machine having a circular block of stone or composite abrasive rotated for sharpening tools or grinding metal
b. the stone used in this machine
c. any stone used for sharpening; whetstone
2. another name for millstone

grindstone

[′grīnd‚stōn]
(engineering)
A stone disk on a revolving axle, used for grinding, smoothing, and shaping.

grindstone

A rotating solid stone wheel (usually sandstone) used for grinding, shaping, sharpening, or polishing.

grindstone

or grind common metaphor for industriousness. [Pop. Culture: Misc.]
References in periodicals archive ?
Kevin and Karen Raye took over the business in 2005, and they use the same process and grindstones that J.W.
A clamp holds the chain firm at just the right angle, while the spinning grindstone swivels down into the leading edge of the cutter.
<BAbove, Workers producing grindstones at a Tyneside quarry
This is the region where the prominent Ngintaka tradition likewise stresses the lack of good stone for seed-processing grindstones (James and Tregenza 2014).
The cement workstations could have held grindstones and/or served as storage receptacles for the powder, according to Wadley, who also excavated about 8,000 pieces of ochre in the area.
A second major industry that became established along the Joggins Section was the manufacture of grindstones (Fig.
The water mill has managed to operate continuously despite a tornado that ripped through the upper story in the 1970s and the nationwide search for replacement grindstones when the old ones wore down.
More than 55 grindstones made of gneiss--a hard rock similar to granite--dating back to between 2000 BC and 1500 BC were retrieved.
Supporters were celebrating after scooping the funding to secure the future of the 19th century building, which - with its grindstones, lathes, hand-powered bellows and hearths - provides a unique snapshot of the traditional industry and which they hope to turn into a working museum.
Re: Which grain grinder is best (July/August, 2004), in 1999 I got a Mil-Rite by Retsel with both the stone and steel grindstones. It was fairly expensive then ($400 or so and must be more now), but it has held up well through grinding up hundreds of pounds of wheat and corn for our home use and to give away--including all our excess Y2K corn and wheat given to friends and the food bank as flour or corn meal.
The waistlines expand, and visiting members of the press are left to remark casually to one another that, as grindstones go, this isn't a bad one on which to have to place the old proboscis.
We found an arrow tip, flint and obsidian pieces, volcanic rock grindstones and planes for making bowls," said National Heritage spokesman Gilberto Sanchez.