| at the wheel |
driving or steering an automobile, ship, or the like. |
| balance wheel |
a wheel that regulates the movement of parts of a mechanism, as in a watch or a music box. |
| disk wheel |
a wheel with a solid disk instead of spokes between hub and rim, used esp. on automobiles. |
| driving wheel |
a wheel that transmits power from an engine, either to other wheels, or into propulsive effort, as on a locomotive engine. |
| emery wheel |
a wheel that is made of or has been coated with emery, used in a machine to cut, grind, or polish. |
| Ferris wheel |
a ride at a carnival or amusement park made of a very large upright wheel with seats hanging from the rim. A motor turns the wheel while people sit in the seats. |
| fifth wheel |
a coupling structure, consisting of two rotating disks placed on the front axle of a cart or carriage, that supports the body while allowing it to turn, or a similar structure that acts as a coupling between the cab and trailer on a tractor-trailer. [2 definitions] |
| four-wheel drive |
a car that drives by means of all four wheels rather than the rear wheels only, or the drive system of such, in which both front and rear wheel axles are turned by the drive shaft. |
| front-wheel drive |
a car design in which only the front wheels get driving power from the engine. |
| gearwheel |
a wheel with a toothed edge in a system of gears; cogwheel. |
| mag wheel |
an automobile or truck wheel of steel alloyed with magnesium or aluminum and thus relatively lightweight and shiny. |
| mill wheel |
a wheel, usu. a water wheel, that produces the power used by a mill's machinery. |
| paddle wheel |
a wheel that has boards or paddles fixed at right angles around it. A paddle wheel is used to move a river steamboat. |
| planet wheel |
see "planet gear." |
| potter's wheel |
a device consisting of a horizontal disk made to rotate by foot or motor power, that enables a potter to create cylindrical or rounded shapes in clay. |
| side-wheel |
of a steamboat, having a paddle wheel on each side. |
| spinning wheel |
a simple machine for spinning thread or yarn that has a single spindle driven by a large wheel. |
| steering wheel |
a wheel that is turned by a driver, pilot, or the like to control the direction of a land vehicle, boat, or aircraft. |
| water wheel |
a wheel turned by the weight of falling or running water, used to operate machinery. [2 definitions] |
| wheel and axle |
a machine consisting of a cylindrical drum to which a wheel concentric with and larger than the drum is fastened, so that as an attached rope unwinds from the wheel, another rope is wound onto the drum, exerting an increased force. |