co‧balt /ˈkəʊbɔːlt $ ˈkoʊbɒːlt/ noun [uncountable]
[Date: 1600-1700; Language: German; Origin: kobalt, from kobold 'goblin'; because goblins were thought to mix it in with silver found in the ground]

1. a shiny silver-white metal that is often combined with other metals or used to give a blue colour to substances such as glass. It is a chemical element: symbol Co

2. (also cobalt blue) a bright blue-green colour
—cobalt adjective

[TahlilGaran] Dictionary of Contemporary English ▲