adj.1. Being or involving the driver of a motor vehicle who leaves the scene of an accident, especially one in which a pedestrian or another vehicle has been struck.
2. Baseball Relating to or being a play in which a base runner starts to run on the pitch and the batter attempts to hit the ball to protect the runner.
3. Involving or designed for swift specific action or effect: "a day of hit-and-run disturbances by bands of dissident students" (Alfonso Narvaez).