noun
gearbox
GEER-boks
noun
1
The enclosed unit in a vehicle that houses the gears and connects to the gear lever.
"A grinding noise from the gearbox usually means trouble."
"The mechanic replaced the worn gearbox before the trip."
How to Use Gearbox
Learner’s notesIn plain EnglishThe part of a car that contains the gears.
Word Forms
gearboxes plural
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A grinding noise from the _____ usually means trouble.
Etymology
Simply gear plus box — the box that houses the gears.