A device locked to the wheel of a motor car to prevent it from being driven; normally used to enforce payment of a traffic violation fine

On a steam locomotive, an unpowered wheel located in front of the driving wheels.

(rail transport) On a steam locomotive, a powered wheel driven by the locomotive's pistons or turbine.

plural of click wheel

A small, rotating circular table of variable speed used in the manufacture of ceramics.

(rail transport) On a steam locomotive, an unpowered wheel or axle located behind the driving wheels.

a revolving crib set in the wall of a church or convent, allowing an abandoned baby to be left anonymously and safely.

The combination button/scroll wheel selection device of some iPods.

A toothed wheel either held in position or turned by an engaging detent or pawl. / The retaining wheel over the mainspring arbor of a timepiece.

(Hinduism, Buddhism and Jainism) A mandala, representing the continuous cycle of birth, life and death.