bevel gear

English Thesaurus

1. gears that mesh at an angle (noun.artifact)

hypernym	:	cogwheel, gear, gear wheel, geared wheel,
definition	:	a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion (noun.artifact)

hyponym	:	differential, differential gear,
definition	:	a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves (noun.artifact)