footboard

noun4

1. •
   A board or small raised platform on which to support or rest the feet, such as that found in a carriage.
2. •
   An upright board across the foot of a bedstead.
3. •
   A place to stand on a scooter or skateboard.
4. •
   A board serving as a step on a vehicle.

   • Continuous footboards ran along each side of the narrow body. — 1941