Source : Webster's Revised Unabridged Dictionary (1913)

Pad \Pad\, n. [Perh. akin to pod.]
   1. A soft, or small, cushion; a mass of anything soft;
      stuffing.

   2. A kind of cushion for writing upon, or for blotting; esp.,
      one formed of many flat sheets of writing paper, or layers
      of blotting paper; a block of paper.

   3. A cushion used as a saddle without a tree or frame.

   4. A stuffed guard or protection; esp., one worn on the legs
      of horses to prevent bruising.

   5. (Zo["o]l.) A cushionlike thickening of the skin one the
      under side of the toes of animals.

   6. A floating leaf of a water lily or similar plant.

   7. (Med.) A soft bag or cushion to relieve pressure, support
      a part, etc.

   8. (Naut.) A piece of timber fixed on a beam to fit the curve
      of the deck. --W. C. Russel.

   9. A measure for fish; as, sixty mackerel go to a pad; a
      basket of soles. [Eng.] --Simmonds.

   {Pad cloth}, a saddlecloth; a housing.

   {Pad saddle}. See def. 3, above.

   {Pad tree} (Harness Making), a piece of wood or metal which
      gives rigidity and shape to a harness pad. --Knight.