| Spring steel rod wound into a coil that supports the vehicles weight while allowing suspension movement. | |
| Air-conditioning | |
| Downward gear engagement in which the input shaft and output shaft are locked together; the gearing in the drivetrain in which one turn of the crank shaft equals one turn of the wheel. | |
| A scale of temperature measurement with the boy point of water at 212F and the freezing point at 32F |