noun
1. : a gear placed between a driving and a driven gear to transfer motion without change of direction or gear ratio
2. : a gear for support or guidance instead of power transmission
noun
1. : a gear placed between a driving and a driven gear to transfer motion without change of direction or gear ratio
2. : a gear for support or guidance instead of power transmission
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012