Quenya 

tinco

metal

tinco noun "metal" (TINKŌ), also name of tengwa #1 (Appendix E, there spelt "tinco", but "tinko" in Etym); tincotéma noun "t-series", dental series, first column of the Tengwar system (Appendix E)

tinco

noun. metal

Derivations

Element in

Quenya [LotR/1122; PE17/123] Group: Eldamo. Published by

rauta

metal

rauta noun "metal" [meaning changed by Tolkien from "copper"]. Notice that in the LotR, the word for metal is given as tinco. (RAUTĀ)