Scum"ble (?), v. t. [imp. & p. p. Scumbled (?); p. pr. & vb. n.
Scumbling (?).] [Freq. of scum. √ 158.] (Fine Arts) To cover
lighty, as a painting, or a drawing, with a thin wash of opaque color,
or with color-crayon dust rubbed on with the stump, or to make any
similar additions to the work, so as to produce a softened effect.
Scum"bling (?), n. 1. (Fine Arts) (a) A mode of obtaining a softened
effect, in painting and drawing, by the application of a thin layer of
opaque color to the surface of a painting, or part of the surface,
which is too bright in color, or which requires harmonizing. (b) In
crayon drawing, the use of the stump.