Stone

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Stone

A unit of weight equivalent to 14 pounds.
References in periodicals archive ?
Similarly, the edges of hoes and spades will benefit from being sharpened to a reasonably clean edge with a file or carborundum stone.
A carborundum stone should be porous, and it should be two-sided for coarse grinding and fine grinding.
In some cases I may start with a coarse carborundum stone and that will be it, for a lawnmower blade.