V 1**means the maximum speed in the takeoff at which the pilot must take the first action (e.g., apply brakes, reduce thrust, deploy speed brakes) to stop the airplane within the accelerate-stop distance. V1**also means the minimum speed in the takeoff, following a failure of the critical engine at VEF, at which the pilot can continue the takeoff and achieve the required height above the takeoff surface within the takeoff distance.
Many people look at V1 as the maximum reject speed only. But it is also a minimum speed. If you didn't have a decision speed and an engine went bang at say 82 knots, how would you know you could keep going and clear your 35 foot trees?