tailboard
nounA tailgate.
nounThe board at the hinder end of a cart or wagon, which can be removed or let down for convenience in unloading.
nounIn a ship, the carved work between the cheeks, fastened to the knee of the head.
nounThe board at the rear end of a cart or wagon, which can be removed or let down, for convenience in loading or unloading.
nounA
a gate at the rear of a vehicle; can be lowered for loading