A wheel forming part of a bevel gear.

Synonym of countwheel

An inclined wheel that drives a wallower in a mill.

A wheel with fans on its rim for producing a current of air.

An amusement ride consisting of a circular platform that rotates rapidly while riders try to stay on it.

Synonym of devil's wheel (“amusement ride”)

Synonym of treadwheel

(literary) One of a set of supposed heavenly wheels that cause thunder when they roll.

(theater) A rotating perforated disc that gives a flickery effect to light coming from behind it.

(rail transport) A flat spot on a railway wheel caused when a wheel, or both wheels on the same axle, in a moving train stop rotating.