Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Qenya 

takse

noun. nail

A noun for “nail” in The Etymologies of the 1930s derived from primitive ᴹ✶taksē under the root ᴹ√TAK “fix, make fast” (Ety/TAK).

Conceptual Development: The Qenya Lexicon of the 1910s had ᴱQ. tas (taks-) “nail” under the early root ᴱ√TAKA “fix, fasten” (QL/88), while the English-Qenya Dictionary of the 1920s had takse “nail” (PE15/75).