👉 A sharpener, often called a sharpening stone or a knife, is an object used in woodworking and other crafts to create points, angles, or ridges on wood. It's typically made of metal or plastic, with blades that are sharp enough to cut through wood fibers. The term "sharpener" can also refer to a tool for making small cuts or holes in wood, such as a utility knife or a circular saw blade.