A word appearing as ᴱQ. onin “anvil” in the Qenya Lexicon and Poetic and Mythological Words of Eldarissa of the 1910s under the early root ᴱ√ONO¹ [ƷONO] “hard” that was also the basis for stone-words (QL/70; PME/70).

Neo-Quenya: In Tolkien’s later writings the root became ᴹ√GONOD “stone”, and ᴺQ. onin “anvil” might be retained based on a reduced variant of that root.