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!
Gnomish
molnaith
noun.molar
A noun appearing as G. molnaith “molar” in the Gnomish Lexicon of the 1910s, a combination of G. môl “mouth” and G. naith “tooth” (GL/41).
Neo-Sindarin: I would adapt this as ᴺS. molnel “molar” for purposes of Neo-Sindarin, using the later word [N.] nêl for “tooth”, and with the initial element reconceived of as [ᴺS.] mol- “grind”.
A noun appearing as G. molnaith “molar” in the Gnomish Lexicon of the 1910s, a combination of G. môl “mouth” and G. naith “tooth” (GL/41).
Neo-Sindarin: I would adapt this as ᴺS. molnel “molar” for purposes of Neo-Sindarin, using the later word [N.] nêl for “tooth”, and with the initial element reconceived of as [ᴺS.] mol- “grind”.