1.Definition: a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition

Related Noun(s):cobalt

Category: General

2.Definition: a state in west central United States in the Rocky Mountains

Related Noun(s):centennial state, colo., colorado

Category: Places

3.Definition: an odorless very poisonous gas that is a product of incomplete combustion of carbon

Category: General

4.Definition: one who refuses to serve in the armed forces on grounds of conscience

Related Noun(s):conscientious objector

Category: People