Definition from Wiktionary, the free dictionary
Uncertain origin, perhaps from scum.
- to apply an opaque glaze to an area of a painting to make it softer or duller
- 2000: The moon was brilliant, the path a track of scumbled footprints in the snow, the air cutting and cold. — Philip Pullman, The Amber Spyglass
- For usage examples of this term, see the citations page.