Definition of copperas
n. - Green vitriol, or sulphate of iron; a green crystalline substance, of an astringent taste, used in making ink, in dyeing black, as a tonic in medicine, etc. It is made on a large scale by the oxidation of iron pyrites. Called also ferrous sulphate. 2
The word "copperas" uses 8 letters: A C E O P P R S.
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