Definition
A grinder is a tool or machine that grinds things down into smaller pieces. Think of it as a food processor's powerful cousin or a skateboarder's favorite surface to shred on. It could be anything from a coffee grinder that turns beans into powder, to a tool that shapes metal. Grinders use abrasion to smooth, sharpen, or pulverize material. A sandwich called a 'grinder' is a type of submarine sandwich. So, a grinder can be a helpful tool or a tasty lunch!