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copple dust. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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copple dust in singular and plural. Everything you need to know about the word
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English
Noun
copple dust (uncountable)
- (obsolete) Cupel-dust; powder used in refining metals, or the gross parts separated by the coppel.
a. 1626, Francis Bacon, Inquisitions touching the compounding of metals:It may be also tried , by incorporating powder of steel , or copple-dust , by pouncing into the quick - silver , and so to proceed to the stupifying UPON glass