The gyrocompass component known as the ROTOR is a five-letter word. It is a device that uses the principles of gyroscopic precession to determine the direction of true north. The ROTOR is a spinning wheel or disc that is mounted on a gimbal, which allows it to remain level regardless of the orientation of the compass. The ROTOR is powered by an electric motor and is connected to a series of gears that control the speed of the ROTOR. The ROTOR is also connected to a series of sensors that measure the angular velocity of the ROTOR, which is then used to calculate the direction of true north.