Fig. to press down hard and fast on the accelerator of a vehicle. She floored it and sped off over the hill.
to drive as fast as you can Some drivers seem to believe a yellow traffic light means floor it and rush through an intersection as fast as possible.Related vocabulary: (put) the pedal to the metal
Etymology: based on the idea that you push the pedal (part worked with the foot) down to the floor of a car to go as fast as you can
floor it(American informal)
to drive a car as fast as it will go He likes to take his sports car out on the road and floor it.