gearbox

or gear box

[geer-boks]

See more synonyms for gearbox on Thesaurus.com

noun

a transmission, as in an automobile.
a shield or housing for gears.

Origin of gearbox

First recorded in 1885–90; gear + box¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for gearbox

delivery, communication, broadcast, gearbox, message, dispatch, conduction, conductance

British Dictionary definitions for gearbox

gearbox

noun

the metal casing within which a train of gears is sealed
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