Homonym: grindstone (Work)
A grindstone is a round, flat stone used for sharpening tools and blades. It is typically made of abrasive materials, allowing it to grind down metal surfaces effectively. Grindstones can be powered by hand or by machines, and they are commonly found in workshops and blacksmiths' shops.
In addition to sharpening, grindstones can also be used for shaping and polishing metal objects. They come in various sizes and grits, with coarser stones for heavy grinding and finer stones for finishing touches. The use of a grindstone is essential in maintaining the sharpness and functionality of tools like knives and chisels.