French purple
Noun
Meaning
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.
Noun
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.