Source : Webster's Revised Unabridged Dictionary (1913)

Rococo \Ro*co"co\, n. [F.; of uncertain etymology.]
   A florid style of ornamentation which prevailed in Europe in
   the latter part of the eighteenth century.

Rococo \Ro*co"co\, a.
   Of or pertaining to the style called rococo; like rococo;
   florid; fantastic.

Source : WordNet®

rococo
     adj : having excessive asymmetrical ornamentation; "an exquisite
           gilded rococo mirror"
     n : fanciful but graceful asymmetric ornamentation in art and
         architecture that originated in France in the 18th
         century

Source : Free On-Line Dictionary of Computing

rococo
     
         {Baroque} in the extreme.  Used to imply that
        a program has become so encrusted with the software equivalent
        of gold leaf and curlicues that they have completely swamped
        the underlying design.  Called after the later and more
        extreme forms of Baroque architecture and decoration prevalent
        during the mid-1700s in Europe.  Alan Perlis said: "Every
        program eventually becomes rococo, and then rubble."
     
        Compare {critical mass}.
     
        [{Jargon File}]
     
        (1996-04-06)