1. a green or blue mineral used as an ore of copper and for making ornamental objects
The Collaborative International Dictionary of English v.0.48:
Malachite \Mal"a*chite\, n. [Fr. Gr. mala`chh a mallow, from its
resembling the green color of the leaf of mallows: cf. F.
malachite. Cf. Mallow.] (Min.)
Native hydrous carbonate of copper, usually occurring in
green mammillary masses with concentric fibrous structure.
Note: Green malachite, or malachite proper, admits of a high
polish, and is sometimes used for ornamental work. Blue
malachite, or azurite, is a related species of a deep
Malachite green. See Emerald green, under Green, n.
WordNet (r) 3.0 (2006):
n 1: a green or blue mineral used as an ore of copper and for
making ornamental objects