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Definition of gearbox
gearbox
/ˈɡɪrˌbɑːks/
gear · box
Plural:gearboxes
gearbox Lexical Profile
CEFR
B2
Grade
7
Tier
2
Usage
Top 10k
Syllables
2
gearbox Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A metal casing containing a set of gears and their associated shafts in a motor vehicle or machine, used to transmit mechanical power from the engine and adjust speed and torque.
Example
"The mechanic had to rebuild the faulty gearbox after the car began grinding whenever the driver shifted into third gear."
Synonyms
View all synonyms for gearboxCite this Entry
Wordmom. (2026). Definition of Gearbox. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/gearbox