1. a device or mechanism that reverses the direction of motion or operation
Usage: technical
2. a person who reverses something or causes it to go in the opposite direction

Examples

• The ship’s reverser allowed it to back away from the dock quickly.
• The engine reverser malfunctioned during the test flight.
• As a policy reverser, she undid many of her predecessor’s decisions.
• The thrust reverser helped the aircraft slow down after landing.
• The motor’s reverser switch changed the direction of rotation.
• He acted as a reverser of the company’s declining fortunes.