gearbox, gear box, gear case
(noun) the shell (metal casing) in which a train of gears is sealed
Source: WordNet® 3.1
gearbox (plural gearboxes)
An enclosed gear train.
That part of a car's transmission containing the train of gears, and to which the gear lever is connected.
• transmission (gear box transmission)
• slushbox
• continuously variable transmission
• torque converter
Source: Wiktionary
21 April 2025
(noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty
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