n. [ Gr. chalko`s brass. ] (Min.) Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster. [ Formerly written chalcosine. ] [ 1913 Webster ]

{ } n. An engraver on copper or brass; hence, an engraver of copper plates for printing upon paper. [ 1913 Webster ]

n. [ Gr. chalko`s copper, brass + -graphy. ] The act or art of engraving on copper or brass, especially of engraving for printing. [ 1913 Webster ]

n. [ Gr. chalko`s brass + E. pyrite. So named from its color. ] (Min.) Copper pyrites, or yellow copper ore; a common ore of copper, containing copper, iron, and sulphur. It occurs massive and in tetragonal crystals of a bright brass yellow color. [ 1913 Webster ]