noun
- a flat circular stone that rotates and is used for sharpening, shaping, or polishing metal tools
Examples
- The blacksmith used a grindstone to sharpen the ax blade.
- She held the knife against the spinning grindstone to restore its edge.
- The old grindstone in the workshop hadn’t been used in years.
- He kept his nose to the grindstone, working diligently on the project.
- The sparks flew as the metal touched the grindstone.
- A foot-powered grindstone sat in the corner of the barn.