1. Sulphate of iron or green vitriol.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• copras,
• xopperas,
• vopperas,
• fopperas,
• dopperas,
• cipperas,
• ckpperas,
• clpperas,
• cppperas,
• c0pperas,
• c9pperas,
• cooperas,
• coppperas,
• copperras,
• coperas,
• coppras,
• Copparas,
• Copperus,
• Coepras,
• Coperras

• coppery.

The adjective form of the word "copperas" is "copperas".

The plural of the "Copperas" can be the "copperas".

The singular of the "Copperas" can be the "Copperas".