From The Collaborative International Dictionary of English v.0.48:
Floor \Floor\ (fl[=o]r), n. [AS. fl[=o]r; akin to D. vloer, G. flur field, floor, entrance hall, Icel. fl[=o]r floor of a cow stall, cf. Ir. & Gael. lar floor, ground, earth, W. llawr, perh. akin to L. planus level. Cf. Plain smooth.] 1. The bottom or lower part of any room; the part upon which we stand and upon which the movables in the room are supported. [1913 Webster]
2. The structure formed of beams, girders, etc., with proper covering, which divides a building horizontally into stories. Floor in sense 1 is, then, the upper surface of floor in sense 2. [1913 Webster]
3. The surface, or the platform, of a structure on which we walk or travel; as, the floor of a bridge. [1913 Webster]
4. A story of a building. See Story. [1913 Webster]
5. (Legislative Assemblies) (a) The part of the house assigned to the members. (b) The right to speak; as, the gentleman from Iowa has the floor. [U.S.] [1913 Webster]
Note: Instead of he has the floor, the English say, he is in possession of the house. [1913 Webster]
6. (Naut.) That part of the bottom of a vessel on each side of the keelson which is most nearly horizontal. [1913 Webster]
7. (Mining) (a) The rock underlying a stratified or nearly horizontal deposit. (b) A horizontal, flat ore body. --Raymond. [1913 Webster]
Floor cloth, a heavy fabric, painted, varnished, or saturated, with waterproof material, for covering floors; oilcloth.
Floor cramp, an implement for tightening the seams of floor boards before nailing them in position.
Floor light, a frame with glass panes in a floor.
Floor plan. (a) (Shipbuilding) A longitudinal section, showing a ship as divided at the water line. (b) (Arch.) A horizontal section, showing the thickness of the walls and partitions, arrangement of passages, apartments, and openings at the level of any floor of a house. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Floor \Floor\, v. t. [imp. & p. p. Floored; p. pr. & vb. n. Flooring.] 1. To cover with a floor; to furnish with a floor; as, to floor a house with pine boards. [1913 Webster]
2. To strike down or lay level with the floor; to knock down; hence, to silence by a conclusive answer or retort; as, to floor an opponent. [1913 Webster]
Floored or crushed by him. --Coleridge. [1913 Webster]
3. To finish or make an end of; as, to floor a college examination. [Colloq.] [1913 Webster]
I've floored my little-go work. --T. Hughes. [1913 Webster]