The surface of a room on which one stands. The lower or supporting surface of a structure. A story or level of a building. The occupants of such a story: The entire floor complained about the noise. A level surface or area used for a specified purpose: a dance floor; a threshing floor. Basketball The court viewed as the playing area for taking free throws, in contrast to the foul line. The surface of a structure on which vehicles travel. The part of a legislative chamber or meeting hall where members are seated and from which they speak. The right to address an assembly, as granted under parliamentary procedure. The body of assembly members: a motion from the floor. The part of a room or building where the principal business or work takes place, especially: The area of an exchange where securities are traded. The part of a retail store in which merchandise is displayed and sales are made. The area of a factory where the product is manufactured or assembled. The ground or lowermost surface, as of a forest or ocean. A lower limit or base: a pricing floor; a bidding floor. To provide with a floor. Informal To press (the accelerator of a motor vehicle) to the floor. To knock down. To stun; overwhelm: The very idea floored me.