The Collaborative International Dictionary of English v.0.48:
Cuprite \Cu"prite\ (k?"pr?t), n. (Min.) The red oxide of copper; red copper; an important ore of copper, occurring massive and in isometric crystals. [1913 Webster]WordNet (r) 3.0 (2006):
cuprite n 1: a mineral consisting of cuprous oxide that is a source of copper