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Cop"per*as (?), n. [OE.
coperose, F. couperose, fr. (assumed?) L.
cuprirosa, equiv. to G. cha`lkanqos, i. e.
copper flower, vitriol. See Copper and Rose.]
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.

&fist; The term copperas was formerly synonymous with
vitriol, and included the green, blue, and white vitriols,
or the sulphates of iron, copper, and zinc.

Cop"per-bot`tomed (?), a.
Having a bottom made of copper, as a tin boiler or other
vessel, or sheathed with copper, as a ship.

Cop"per-faced` (?), a.Faced or
covered with copper; as, copper-faced type.

Cop"per-fas`tened (?),
a.Fastened with copper bolts, as the
planks of ships, etc.; as, a copper-fastened
ship.

Cop"per*head` (?), n.


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