copper

n.铜；铜币；铜器 a.铜(制)的；(紫)铜色的

cooperative, coordinate, coordination, coordinator, coorperation, coot, cop, cop-out, copain, copartner, copartnership, cope, cope with, copeck (also kopeck), Copernican, copier, coping, coping-stone, copious, copiously, copper beech, copper-bottomed, copperhead, copperplate, coppice, copra, copse, Copt, Coptic, copula, copulate, copulation, copulative, copy, copy desk, copy-book, copy-cat, copy-typist, copy-writer, copyist,