Source : Webster's Revised Unabridged Dictionary (1913)

Decorate \Dec"o*rate\, v. t. [imp. & p. p. {Decorated}; p. pr. &
   vb. n. {Decorating}.] [L. decoratus, p. p. of decorare, fr.
   decus ornament; akin to decere to be becoming. See {Decent}.]
   To deck with that which is becoming, ornamental, or honorary;
   to adorn; to beautify; to embellish; as, to decorate the
   person; to decorate an edifice; to decorate a lawn with
   flowers; to decorate the mind with moral beauties; to
   decorate a hero with honors.

         Her fat neck was ornamented with jewels, rich bracelets
         decorated her arms.                      --Thackeray.

   Syn: To adorn; embellish; ornament; beautify; grace. See
        {Adorn}.

   {Decorated style} (Arch.), a name given by some writers to
      the perfected English Gothic architecture; it may be
      considered as having flourished from about a. d. 1300 to
      a. d. 1375.

Source : WordNet®

decorate
     v 1: make more attractive by adding ornament, colour, etc.;
          "Decorate the room for the party"; "beautify yourself
          for the special day" [syn: {adorn}, {grace}, {ornament},
           {embellish}, {beautify}]
     2: be beautiful to look at; "Flowers adorned the tables
        everywhere" [syn: {deck}, {adorn}, {grace}, {embellish}, {beautify}]
     3: award a mark of honor, as a medal, to
     4: provide with decoration; "dress the windows" [syn: {dress}]