FLOORBOARD

/ ˈflɔːbɔːd; NAmE ˈflɔːrbɔːrd/ noun

1.

a long flat piece of wood in a wooden floor :

bare / polished floorboards

2.

[ usually sing. ] ( NAmE ) = floor (2):

a car floorboard

He had his foot to the floorboard (= was going very fast) .