Q. Návatar m. “*Dwarf-father”
A name for Aulë as father of the dwarves (PM/391). The second element is clearly atar¹ “father”, but the meaning of the initial element is more difficult to determine. It might be a prefixal form Nau- of nauco “Dwarf”, or it could the word náva¹ “hollow” associated with Dwarves via the name Návarot.
References ✧ PM/391; PMI