Source : Webster's Revised Unabridged Dictionary (1913)

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.

   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.

            Floored or crushed by him.            --Coleridge.

   3. To finish or make an end of; as, to floor a college
      examination. [Colloq.]

            I've floored my little-go work.       --T. Hughes.

Source : WordNet®

floored
     adj : provided with a floor [ant: {ceilinged}]