French purple

English

Noun

French purple (usually uncountable, plural French purples)

  1. 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

References

  1. ^ Andrew Ure (1839), A Dictionary of Arts, Manufactures, and Mines‎[1], London: Longman, Orme, Browne, Green, & Longmans
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