1. whetstones that are lubricated with oil during use for sharpening tools and blades

Examples

• The carpenter kept several oilstones in his workshop for maintaining his chisels.
• She applied a few drops of oil to the oilstones before sharpening her kitchen knives.
• Fine-grit oilstones produce a razor-sharp edge on woodworking tools.
• The blacksmith used coarse oilstones to repair the damaged blade.
• Quality oilstones can last for decades with proper care.
• He learned to use oilstones from his grandfather, who was a master craftsman.