411 REFERENCE · Wiktionary
Claude glass
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
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Etymology
en French painter Claude Lorrain c. 1600 1682 =.
Noun
A slightly convex mirror, commonly of black glass, once used by artists to view landscapes and produce works similar to those of Claude Lorrain.
en Claude Lorraine glass black mirror
Further reading