gearbox
noun
- machine for the controlled application of the power
Wiktionary
Pronunciation: /ˈɡɪəbɒks/ / /ˈɡɪːbɔks/ / /ˈɡɪjəbɔks/
noun
Etymology: From gear + box.
- An enclosed gear train.
- That part of a car's transmission containing the train of gears, and to which the gear lever is connected.