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 classic literature ?
Dede and Ferguson, between them, after a patient struggle, taught Daylight poetry, so that in the end he might have been often seen, sitting slack in the saddle and dropping down the mountain trails through the sun-flecked woods, chanting aloud Kipling's "Tomlinson," or, when sharpening his ax, singing into the whirling grindstone Henley's "Song of the Sword.
Loss through breakage during trimming was also high, though many of the broken slabs were recycled as smaller grindstones.
Yet even such basic grindstones can effectively process seeds, which are a seasonal food staple in this area, though tjiwa are much less efficient than millstones for processing large volumes of grain.
The Guildhall also housed the Town Hutch, where the town's money from tolls on coal, salt and grindstones were kept.
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.
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.
Grindstones are sporadically attested from the Aurignacian, but it is from the Gravettian that these artefacts become more frequent.
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.
I bet that would get noses to grindstones and cut down the mucking about that disrupts so many classrooms.
Grindstones, rock chips, arrowheads and other artifacts lie all around the area.
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.