French purple
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English[edit]
Noun[edit]
French purple (usually uncountable, plural French purples)
- A dyestuff obtained from certain lichen known as orchella weeds, used for colouring woollen and silken fabrics, without the aid of mordants.[1]
See also[edit]
References[edit]
- ^ 1839, Andrew Ure, A Dictionary of Arts, Manufactures, and Mines