Source : Webster's Revised Unabridged Dictionary (1913)

Slipper \Slip"per\, a. [AS. slipur.]
   Slippery. [Obs.]

         O! trustless state of earthly things, and slipper hope
         Of mortal men.                           --Spenser.

Slipper \Slip"per\, n.
   1. One who, or that which, slips.

   2. A kind of light shoe, which may be slipped on with ease,
      and worn in undress; a slipshoe.

   3. A kind of apron or pinafore for children.

   4. A kind of brake or shoe for a wagon wheel.

   5. (Mach.) A piece, usually a plate, applied to a sliding
      piece, to receive wear and afford a means of adjustment;
      -- also called {shoe}, and {gib}.

   {Slipper animalcule} (Zo["o]l.), a ciliated infusorian of the
      genus {Paramecium}.

   {Slipper flower}.(Bot.) Slipperwort.

   {Slipper limpet}, or {Slipper shell} (Zo["o]l.), a boat
      shell.

Source : WordNet®

slipper
     n 1: low footwear that can be slipped on and off easily; usually
          worn indoors [syn: {carpet slipper}]
     2: a person who slips or slides because of loss of traction
        [syn: {skidder}, {slider}]