a workable metal; copper, iron (see Molina); devices made from metal (see Karttunen); e.g., used as a noun to refer to metal bell(s), metal tool(s), armor; can also refer to steel
someone or something covered with metal; can refer to a person in chains, a man in armor, etc.
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 234.