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Synonyms

gearbox

American  
[geer-boks] / ˈgɪərˌbɒks /
Or gear box

noun

gearboxes plural
  1. a transmission, as in an automobile.

  2. a shield or housing for gears.


gearbox British  
/ ˈɡɪəˌbɒks /

noun

  1. the metal casing within which a train of gears is sealed

  2. this metal casing and its contents, esp in a motor vehicle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of gearbox

First recorded in 1885–90; gear + box 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Unlike most gas-powered motorcycles, e-motos have no clutch or gearbox.

From The Wall Street Journal Jun. 7, 2026

Heading out for the final session with a new wing, Russell's car stopped on track on his out lap as the gearbox refused to change gear.

From BBC Mar. 14, 2026

Interfering with molecular systems like the T9SS gearbox could also prevent bacteria from moving and from releasing harmful proteins that contribute to disease.

From Science Daily Mar. 13, 2026

Are any of the top three drivers in danger of a grid penalty for changing engine, gearbox etc?

From BBC Nov. 25, 2025

I've got a half drum of drain oil in the tractor shed that I've been meaning to trade in for some gearbox lube that Willy Simons said he'd let me have.

From Make Mine Homogenized by Freas, Kelly

Unlike most motorcycles, e-motos do not have clutches or gearboxes.

From The Wall Street Journal Jun. 7, 2026

Unlike most motorcycles, e-motos do not have clutches or gearboxes.

From The Wall Street Journal Jun. 7, 2026

ZF, a supplier of gearboxes and other auto parts to carmakers such as BMW and Volkswagen, said the deal will help reduce debt and allow it to focus its resources on core technologies.

From The Wall Street Journal Dec. 23, 2025

Mercedes' revenue comes from sponsorship and licensing, F1 prize money and other revenues from inside the sport - for example selling gearboxes to Williams and Aston Martin.

From BBC Nov. 20, 2025

It builds gearboxes in Halewood and is in the final stages of creating a major new facility for producing motors for electric vehicles on the site.

From BBC Nov. 20, 2024

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