√Ad. MINIL root. (triconsonantal-root) “heaven, sky”
A Primitive Adûnaic root glossed “heaven, sky” that Tolkien used as an example of an “early borrowing” from Primitive Elvish: the ancient Elvish root √MENEL became ✶Ad. √MINIL from whatever Avari language influenced Primitive Adûnaic (SD/414).
Reference ✧ SD/414 ✧ “heaven, sky”
|ᴹ√MENEL > MINIL||[menel] > [menil] > [minil]||✧ SD/414|