reverse definition

1. a relation of direct opposition
• examples: we thought Sue was older than Bill but just the reverse was true
2. the gears by which the motion of a machine can be reversed
3. an unfortunate happening that hinders or impedes; something that is thwarting or frustrating
4. the side of a coin or medal that does not bear the principal design
5. (American football) a running play in which a back running in one direction hands the ball to a back running in the opposite direction
6. of the transmission gear causing backward movement in a motor vehicle
• examples: in reverse gear