(1) A green or blue mineral used as an ore of copper and for making ornamental objects
From , from . Or, could be from Hebrew, MALACH [ "messenger" ], or, perhaps hailing from another Ancient Greek term, μαλαχ- [ "fingers" ].
- A bright green mineral, a basic copper carbonate, Cu2CO3(OH)2; one of the principal ores of copper.
- A mild green colour, like that of the mineral.
- from olive-taupe to that of a mild to deeply-rich -- at times seemingly translucent -- green colour, like that of the mineral which is present on oxidated copper.