cobalt

n. (Co) brittle silver-white metallic element used in a variety of alloys

Cobalt (IPA: ) is a hard, lustrous, silver-grey metal, a chemical element with symbol Co. It is found in various ores, and is used in the preparation of magnetic, wear-resistant, and high-strength alloys. Its compounds are used in the production of inks, paints, and varnishes.
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Cobalt /co·balt/ a chemical element, at. no. 27. Inhalation of the dust can cause pneumoconiosis and exposure to the powder can cause dermatitis. [more]Cobalt - Community and Resources

Noun
1. a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
(synonym) Co, atomic number 27
(hypernym) metallic element, metal
(hyponym) cobalt 60
(substance-holonym) smaltite

n. cobalt