Dictionary definition for: Co
1. (n) an odorless very poisonous gas that is a product of incomplete combustion of carbon
2. (n) a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
3. (n) one who refuses to serve in the armed forces on grounds of conscience
4. (n) a state in west central United States in the Rocky Mountains
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