Training wheel

Noun

Definitions

1.NounA wheel forming part of the machinery of a cannon or a similar firearm which is turned to train or aim the weapon at a target.

2.NounSynonym of trailing wheel (“on a steam locomotive, an unpowered wheel or axle located behind the driving wheels”).

3.NounOne of a pair of small wheels, each attached to one side of a bicycle's rear wheel to provide support for new riders.

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