S: (n) second gear, second (the gear that has the second lowest forward gear ratio in the gear box of a motor vehicle) "he had to shift down into second to make the hill"
S: (n) steering gear (a gear that couples the steering wheel to the steering linkage of a motor vehicle)
S: (n) third gear, third (the third from the lowest forward ratio gear in the gear box of a motor vehicle) "you shouldn't try to start in third gear"
S: (n) transmission, transmission system (the gears that transmit power from an automobile engine via the driveshaft to the live axle)