Floor

the inside lower horizontal surface (as of a room, hallway, tent, or other structure)

a structure consisting of a room or set of rooms at a single position along a vertical scale

a lower limit

the ground on which people and animals move about

the bottom surface of any lake or other body of water

the lower inside surface of any hollow structure

the occupants of a floor

the parliamentary right to address an assembly

the legislative hall where members debate and vote and conduct other business

a large room in a exchange where the trading is done

surprise greatly

knock down with force