stipple

stipple |ˈstipəl|verb [ trans. ](in drawing, painting, and engraving) mark (a surface) with numerous small dots or specks : [as n. ] (stippling) the miniaturist's use of stippling.• produce a decorative effect on (paint or other material) by roughening its surface when it is wet.nounthe process or technique of stippling a surface, or theeffect so created.