Reverse gear

Near-synonym: reversing gear

The reverse gear of a Ford Model T was engaged with a foot pedal.

Reverse gear, air-operated, is incorporated in the transmission.

It's a chance to get transport investment in this country out of reverse gear - a chance to end paper promises.

Near-synonym: reversing gear

This old lathe has a reverse gear, but it wouldn't be used under most conditions, and in fact its use is unsafe under most conditions because the chuck is attached with nothing but a right-hand screw thread!