Any of the long boards laid over joists to make a floor.
The floor of a car.
To sink the gas pedal into the floorboard of the car, in order to bring the car to the highest possible speed.
An apartment, room, etc., on such an intermediate floor.
An intermediate floor or storey in between the main floors of a building; specifically, one that is directly above the ground floor which does not extend over the whole floorspace of the building, and so resembles a large balcony overlooking the ground floor; an entresol.
The lowest balcony in an auditorium, cinema, theatre, etc.; the dress circle.
To fit (a building or other place) with a mezzanine floor.
Characteristic of or relating to high-interest loans which have no collateral, and are regarded as intermediate in nature, ranking above equity but below secured loans.
Fulfilling an intermediate or secondary function.