The Collaborative International Dictionary of English v.0.48:

Dress \Dress\ (dr[e^]s), v. t. [imp. & p. p. Dressed
   (dr[e^]st) or Drest; p. pr. & vb. n. Dressing.] [OF.
   drecier to make straight, raise, set up, prepare, arrange, F.
   dresser, (assumed) LL. directiare, fr. L. dirigere, directum,
   to direct; dis- + regere to rule. See Right, and cf.
   Address, Adroit, Direct, Dirge.]
   1. To direct; to put right or straight; to regulate; to
      order. [Obs.]
      [1913 Webster]

            At all times thou shalt bless God and pray Him to
            dress thy ways.                       --Chaucer.
      [1913 Webster]

   Note: Dress is used reflexively in Old English, in sense of
         "to direct one's step; to address one's self."
         [1913 Webster]

               To Grisild again will I me dresse. --Chaucer.
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   2. (Mil.) To arrange in exact continuity of line, as
      soldiers; commonly to adjust to a straight line and at
      proper distance; to align; as, to dress the ranks.
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   3. (Med.) To treat methodically with remedies, bandages, or
      curative appliances, as a sore, an ulcer, a wound, or a
      wounded or diseased part.
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   4. To adjust; to put in good order; to arrange; specifically:
      (a) To prepare for use; to fit for any use; to render
          suitable for an intended purpose; to get ready; as, to
          dress a slain animal; to dress meat; to dress leather
          or cloth; to dress or trim a lamp; to dress a garden;
          to dress a horse, by currying and rubbing; to dress
          grain, by cleansing it; in mining and metallurgy, to
          dress ores, by sorting and separating them.
          [1913 Webster]

                And the Lord God took the man, and put him into
                the garden of Eden to dress it.   --Gen. ii. 15.
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                When he dresseth the lamps he shall burn
                incense.                          --Ex. xxx. 7.
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                Three hundred horses . . . smoothly dressed.
                                                  --Dryden.
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                Dressing their hair with the white sea flower.
                                                  --Tennyson
          .
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                If he felt obliged to expostulate, he might have
                dressed his censures in a kinder form.
                                                  --Carlyle.
      (b) To cut to proper dimensions, or give proper shape to,
          as to a tool by hammering; also, to smooth or finish.
      (c) To put in proper condition by appareling, as the body;
          to put clothes upon; to apparel; to invest with
          garments or rich decorations; to clothe; to deck.
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                Dressed myself in such humility.  -- Shak.
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                Prove that ever Idress myself handsome till thy
                return.                           --Shak.
      (d) To break and train for use, as a horse or other
          animal.
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   To dress up or To dress out, to dress elaborately,
      artificially, or pompously. "You see very often a king of
      England or France dressed up like a Julius C[ae]sar."
      --Addison.

   To dress a ship (Naut.), to ornament her by hoisting the
      national colors at the peak and mastheads, and setting the
      jack forward; when dressed full, the signal flags and
      pennants are added. --Ham. Nav. Encyc.

   Syn: To attire; apparel; clothe; accouter; array; robe; rig;
        trim; deck; adorn; embellish.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

dressed \dressed\ adj.
   1. same as attired.

   Syn: appareled, attired, clad, garbed, garmented,
        habilimented, robed.
        [WordNet 1.5 +PJC]

   2. covered with medication or a bandage; -- of wounds.

   Syn: bandaged.
        [WordNet 1.5 +PJC]

   3. trim and smooth; -- of lumber or stone.

   Syn: polished.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

dressed
    adj 1: dressed or clothed especially in fine attire; often used
           in combination; "the elegantly attired gentleman";
           "neatly dressed workers"; "monks garbed in hooded robes";
           "went about oddly garmented"; "professors robed in
           crimson"; "tuxedo-attired gentlemen"; "crimson-robed
           Harvard professors" [syn: appareled, attired,
           dressed, garbed, garmented, habilimented,
           robed]
    2: treated with medications and protective covering
    3: (of lumber or stone) to trim and smooth [syn: dressed,
       polished]
    4: dressed in fancy or formal clothing [syn: dressed(p),
       dressed-up, dressed to the nines(p), dressed to
       kill(p), dolled up, spruced up, spiffed up, togged
       up]