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training wheel

(military, historical) A 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.

ˈtɹeɪnɪŋ wiːl52 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 27, 2026

(military, historical) A 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.

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#2·Apr 27, 2026

(chiefly, Canada, US, and, in the plural, cycling) One 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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