Hit-and-run

Full definition of hit-and-run

(plural hit-and-runs)

(legal) The crime of causing an accident, as with a motor vehicle, and leaving without acknowledging responsibility.
(baseball) A play in baseball where the baserunners leave their base before the batter hits the ball, assuming that the batter will in fact hit the ball and this will give them an advantage.
(military) The military technique of attacking one place and then quickly moving to another before defenders can react.