The crossword solution for the term PARK OR DRIVE is GEAR, which is a four-letter word. GEAR is a mechanical device that is used to transmit motion and force between two or more parts of a machine. It is commonly used in automobiles to change the speed and torque of the engine. GEAR is also used in bicycles to change the speed of the pedals. In addition, it is used in park rides and roller coasters to control the speed and direction of the ride.