"It doesn't have a name. It's just the 'One Ring,' because it's unique enough to not need a name. It's never named in any of the books."
Other options:
no subject
no subject
no subject
no subject
Ash nazg durbatulûk, ash nazg gimbatul,
ash nazg thrakatulûk, agh burzum-ishi krimpatul.
There doesn't seem to be one, other than "Sauron's ring" or "Melkior's chief Maiar's ring"... (being silly with the latter)
the Ring seems to pretty much be it.
no subject
no subject
"It doesn't have a name. It's just the 'One Ring,' because it's unique enough to not need a name. It's never named in any of the books."