Synonyms for Metal (same or very similar meaning)
WordNet sense 1 (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.):
metallic elementWordNet sense 2 (a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten):
alloy, alloyWordNet sense 3 (containing or made of or resembling or characteristic of a metal):
metallicFrom the ODE community, based on WordNetadd/edit