training wheel
名词 n.
英 /ˈtɹeɪnɪŋ wiːl/
美 /ˈtreɪnɪŋ ˌ(h)wil/
英文释义
名词 n.
- 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.
- Synonym of trailing wheel (“on a steam locomotive, an unpowered wheel or axle located behind the driving wheels”).
- One of a pair of small wheels, each attached to one side of a bicycle's rear wheel to provide support for new riders.
词形变化
词汇关系
衍生词
词源
From training (“relating to the moving of a firearm laterally so that it points in a different direction; relating to imparting and acquiring skills”) + wheel.
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数据来源: Wiktionary