From Longman Dictionary of Contemporary Englishgearboxgear‧box /ˈɡɪəbɒks $ ˈɡɪrbɑːks/ noun [countable] TTCthe system of gears in a vehicle
Examples from the Corpus
gearbox• It does not need a gearbox, and it needs little maintenance.• The V8 will not fit the 4 cylinder gearbox without an adaptor plate and suitably made engine mounts.• Only then, typically, would it become part of a steam engine, gearbox, or pump.• And it even has a twist-and-go gearbox.• The cab is new, too, and a 16 forward and 4 reverse gearbox is fitted.• The four speed gearbox seems to be very high geared.• The Zelor 9540 now sports an all-synchro gearbox.• But performance is poor, the steering light and lifeless, ergonomics messy and the gearbox jerky. 