Source : Webster's Revised Unabridged Dictionary (1913)

Adorn \A*dorn"\, v. t. [imp. & p. p. {Adorned}; p. pr. & vb. n.
   {Adorning}.] [OE. aournen, anournen, adornen, OF. aorner, fr.
   L. aaornare; ad + ornare to furnish, embellish. See {Adore},
   {Ornate}.]
   To deck or dress with ornaments; to embellish; to set off to
   advantage; to render pleasing or attractive.

         As a bride adorneth herself with her jewels. --Isa.
                                                  lxi. 10.

         At church, with meek and unaffected grace, His looks
         adorned the venerable place.             --Goldsmith.

   Syn: To deck; decorate; embellish; ornament; beautify; grace;
        dignify; exalt; honor.

   Usage: To {Adorn}, {Ornament}, {Decorate}, {Embellish}. We
          decorate and ornament by putting on some adjunct which
          is attractive or beautiful, and which serves to
          heighten the general effect. Thus, a lady's head-dress
          may be ornament or decorated with flowers or jewelry;
          a hall may be decorated or ornament with carving or
          gilding, with wreaths of flowers, or with hangings.
          Ornament is used in a wider sense than decorate. To
          embellish is to beautify or ornament richly, not so
          much by mere additions or details as by modifying the
          thing itself as a whole. It sometimes means gaudy and
          artificial decoration. We embellish a book with rich
          engravings; a style is embellished with rich and
          beautiful imagery; a shopkeeper embellishes his front
          window to attract attention. Adorn is sometimes
          identical with decorate, as when we say, a lady was
          adorned with jewels. In other cases, it seems to imply
          something more. Thus, we speak of a gallery of
          paintings as adorned with the works of some of the
          great masters, or adorned with noble statuary and
          columns. Here decorated and ornamented would hardly be
          appropriate. There is a value in these works of genius
          beyond mere show and ornament. Adorn may be used of
          what is purely moral; as, a character adorned with
          every Christian grace. Here neither decorate, nor
          ornament, nor embellish is proper.

Adorn \A*dorn"\, n.
   Adornment. [Obs.] --Spenser.

Adorn \A*dorn"\, a.
   Adorned; decorated. [Obs.] --Milton.

Source : WordNet®

adorn
     v 1: make more attractive by adding ornament, colour, etc.;
          "Decorate the room for the party"; "beautify yourself
          for the special day" [syn: {decorate}, {grace}, {ornament},
           {embellish}, {beautify}]
     2: be beautiful to look at; "Flowers adorned the tables
        everywhere" [syn: {deck}, {decorate}, {grace}, {embellish},
         {beautify}]
     3: furnish with power or authority; of kings or emperors [syn:
        {invest}, {clothe}]