floorboard

/F L AO1 R B AO0 R D/
noun
  1. 1

    Any of the long boards laid over joists to make a floor.

  2. 2

    The floor of a car.

verb
  1. 1

    To sink the gas pedal into the floorboard of the car, in order to bring the car to the highest possible speed.

Source: https://en.wiktionary.org/wiki/floorboard