A grinder can refer to several different things depending on the context:
- Machine tool: A grinder is a machine or power tool used for grinding, which involves using an abrasive wheel to remove material from a workpiece to achieve high surface quality and precision. Grinding machines are common in metalworking and manufacturing for sharpening, smoothing, or polishing surfaces
- Kitchen device: It can also mean a kitchen appliance used to grind food items like spices or coffee beans
- Herb grinder: A specific type of cylindrical device with two halves containing sharp teeth used to shred herbs, especially cannabis. These grinders come in various materials like metal or plastic and different designs (2-piece, 3-piece, 4-piece) for grinding and collecting fine particles called kief
- Investor slang: In finance, a "grinder" is an investor who makes many small trades to earn small, consistent profits rather than large, risky investments. This approach focuses on steady returns through high volume of small transactions
- Other meanings: The term can also mean a person who grinds (e.g., sharpens tools), a molar tooth, or colloquially refer to someone who works hard at tedious tasks
In summary, "grinder" most commonly refers to a grinding machine or tool but can also mean a herb shredder, a kitchen appliance, an investor with a particular trading style, or a person who grinds or works hard. The precise meaning depends on the context in which it is used.