Source : Webster's Revised Unabridged Dictionary (1913)

Fresco \Fres"co\, n.; pl. {Frescoes} or {Frescos}. [It., fr.
   fresco fresh; of German origin. See {Fresh}, a.]
   1. A cool, refreshing state of the air; duskiness; coolness;
      shade. [R.] --Prior.

   2. (Fine Arts)
      (a) The art of painting on freshly spread plaster, before
          it dries.
      (b) In modern parlance, incorrectly applied to painting on
          plaster in any manner.
      (c) A painting on plaster in either of senses
      a and
      b .

Fresco \Fres"co\, v. t. [imp. & p. p. {Frescoed}; p. pr. & vb.
   n. {Frescoing}.]
   To paint in fresco, as walls.

Source : WordNet®

fresco
     n 1: a mural done with watercolors on wet plaster
     2: a durable method of painting on a wall by using watercolors
        on wet plaster
     v : paint onto wet plaster on a wall
     [also: {frescoes} (pl)]

Source : Free On-Line Dictionary of Computing

Fresco
     
        1.  An {object-oriented} {API} for
        {graphical user interface}s, under development by the {X
        Consortium} as an open, multi-vendor {standard}.
     
        2.  An {object-oriented}
        {specification language}.
     
        ["Refinement in Fresco", in Object Oriented Specification Case
        Studies, K. Lano et al eds, P-H 1993].
     
        (1996-04-28)