[with obj.]modify (a painting or colour) by applying a very thin coat of opaque paint to give a softer or duller effect 涂上薄薄一层不透明颜料使(绘画,色彩)变淡 ■modify (a drawing) in a similar way with light shading in pencil or charcoal 用铅笔(或炭笔)的淡阴影使(图画)色彩变得柔和暗淡
noun
a thin, opaque coat of paint or layer of shading applied to give a softer or duller effect 为了使色彩变得柔和暗淡而涂上的薄薄一层不透明颜料(或抹上的一层阴影) ■the effect produced by adding such a coat or layer 色彩淡化效果
语源
late 17th cent. (as a verb): perhaps a frequentative of the verb scum