A winch is a mechanical device used to pull in, let out, or otherwise adjust the tension of a rope or cable. It typically consists of a spool or drum that is turned by a hand crank or motor. Winches are commonly used in various applications, including construction, towing, and off-road vehicles, to lift heavy loads or move objects. Winches can be powered manually or electrically, depending on their intended use. They are often equipped with safety features like brakes to prevent accidental release of the load. Common types of winches include hand winches, electric winches, and hydraulic winches.