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Webster 1913 Edition
Scumble
Scum′ble
,Verb.
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.