metal

n. 1 a any of a class of workable elements such as gold, silver, iron, or tin, usu. Good conductors of heat and electricity and forming basic oxides. B alloy of any of these. 2 molten material for making glass. 3 (in pl.) Rails of a railway line. 4 = *road-metal. adj. Made of metal. v. (-ll-; us -l-) 1 make or mend (a road) with road-metal. 2 cover or fit with metal. [greek metallon mine]

n. An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than acid properties, as contrasted with the nonmetals, or metalloids. No sharp line can be drawn between the metals and nonmetals, and certain elements partake of both acid and basic qualities, as chromium, manganese, bismuth, etc.