NOUN (2)

1. a mural done with watercolors on wet plaster;

2. a durable method of painting on a wall by using watercolors on wet plaster;


VERB (1)

1. paint onto wet plaster on a wall;

The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

   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 .
        [1913 Webster]

   al fresco in the open air; out of doors; outdoors; as, to
      dine al fresco.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Fresco \Fres"co\, v. t. [imp. & p. p. Frescoed; p. pr. & vb.
   n. Frescoing.]
   To paint in fresco, as walls.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

102 Moby Thesaurus words for "fresco":
   abstract, abstraction, altarpiece, apply paint, bedaub, bedizen,
   begild, besmear, block print, brush on paint, calcimine,
   calcimining, coat, coating, collage, color, color print,
   complexion, copy, cover, covering, cyclorama, dab, daub, deep-dye,
   dip, diptych, distemper, double-dye, dye, emblazon, enamel,
   enameling, engild, engraving, face, fast-dye, gild, gilding, glaze,
   glazing, gloss, glossing, grain, hue, icon, illuminate,
   illumination, illustration, image, imbue, ingrain, japan,
   japanning, lacquer, lay on color, likeness, miniature, montage,
   mosaic, mural, paint, painting, panorama, parget, photograph,
   picture, pigment, prime, priming, print, representation,
   reproduction, shade, shadow, shellac, shellacking, slop on paint,
   smear, stain, stained glass window, staining, stencil, still life,
   stipple, stippling, tableau, tapestry, tinct, tincture, tinge,
   tint, tone, triptych, undercoat, undercoating, varnish, varnishing,
   wall painting, wash, whitewash, whitewashing