The Collaborative International Dictionary of English v.0.48:

Pad \Pad\, v. t. [imp. & p. p. Padded; p. pr. & vb. n.
   Padding.]
   1. To stuff; to furnish with a pad or padding.
      [1913 Webster]

   2. (Calico Printing) To imbue uniformly with a mordant; as,
      to pad cloth. --Ure.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pad \Pad\, v. i.
   1. To travel heavily or slowly. --Bunyan.
      [1913 Webster]

   2. To rob on foot. [Obs.] --Cotton Mather.
      [1913 Webster]

   3. To wear a path by walking. [Prov. Eng.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pad \Pad\, n. [Perh. akin to pod.]
   1. A soft, or small, cushion; a mass of anything soft;
      stuffing.
      [1913 Webster]

   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.
      [1913 Webster]

   3. A cushion used as a saddle without a tree or frame.
      [1913 Webster]

   4. A stuffed guard or protection; esp., one worn on the legs
      of horses to prevent bruising.
      [1913 Webster]

   5. (Zool.) A cushionlike thickening of the skin one the under
      side of the toes of animals.
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   6. A floating leaf of a water lily or similar plant.
      [1913 Webster]

   7. (Med.) A soft bag or cushion to relieve pressure, support
      a part, etc.
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   8. (Naut.) A piece of timber fixed on a beam to fit the curve
      of the deck. --W. C. Russel.
      [1913 Webster]

   9. A measure for fish; as, sixty mackerel go to a pad; a
      basket of soles. [Eng.] --Simmonds.
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   10. A dwelling place, usually an apartment; one's living
       quarters; as, come over to my pad to watch the game.
       [Slang]
       [PJC]

   11. A sum of money paid as a bribe to police officers, shared
       among them; also, the list of such officers receiving
       such a bribe.
       [PJC]

   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.

   on the pad, receiving bribes; -- of police officers.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

pad \pad\ (p[a^]d), n. [D. pad. [root]21. See Path.]
   1. A footpath; a road. [Obs. or Prov. Eng.]
      [1913 Webster]

   2. An easy-paced horse; a padnag. --Addison
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            An abbot on an ambling pad.           --Tennyson.
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   3. A robber that infests the road on foot; a highwayman; --
      usually called a footpad. --Gay. --Byron.
      [1913 Webster]

   4. The act of robbing on the highway. [Obs.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pad \Pad\, v. t.
   To travel upon foot; to tread. [Obs.]
   [1913 Webster]

         Padding the streets for half a crown.    --Somerville.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pad
    n 1: a number of sheets of paper fastened together along one
         edge [syn: pad, pad of paper, tablet]
    2: the large floating leaf of an aquatic plant (as the water
       lily)
    3: a block of absorbent material saturated with ink; used to
       transfer ink evenly to a rubber stamp [syn: pad, inkpad,
       inking pad, stamp pad]
    4: a flat mass of soft material used for protection, stuffing,
       or comfort
    5: a platform from which rockets or space craft are launched
       [syn: launching pad, launchpad, launch pad, launch
       area, pad]
    6: temporary living quarters [syn: diggings, digs,
       domiciliation, lodgings, pad]
    7: the fleshy cushion-like underside of an animal's foot or of a
       human's finger
    v 1: add details to [syn: embroider, pad, lard,
         embellish, aggrandize, aggrandise, blow up,
         dramatize, dramatise]
    2: walk heavily and firmly, as when weary, or through mud;
       "Mules plodded in a circle around a grindstone" [syn: slog,
       footslog, plod, trudge, pad, tramp]
    3: line or stuff with soft material; "pad a bra" [syn: pad,
       fill out]
    4: add padding to; "pad the seat of the chair" [syn: pad,
       bolster]

The Free On-line Dictionary of Computing (19 January 2023):

Packet Assembler/Disassembler
PAD

   (PAD) Hardware or software device for splitting a data stream
   into discrete packets for transmission over some medium and
   then reforming the stream(s) at the receiver.

   The term is most often used for interfaces to X.25 lines.

   (1995-01-31)