noun, masculine/ˌkambjo de ˈmaɾt͡ʃas/plural: cambios de marchas
gear change, gearshift (a mechanism which changes gears in a vehicle); gear shift, shift lever, stick shift; (UK) gear lever, gear stick (the lever used to change gears in a motor car); derailleur (the mechanism on a bicycle used to move the chain from one sprocket (gear) to another)