cobalt /'kwbalt; 'kobolt/ n hard silvery-white metal (symbol Co) used in many alloys; deep blue colouring matter made from its compounds, used to colour glass and ceramics. 銘 (堅(jiān)京的銀白色金屬，化學(xué)符號(hào) Co, 用于許多種合金); 用銘化合物所制的深藍(lán)色顏料 (用以加顏色于玻璃及陶器); 銘藍(lán)。