Neo-Blackspeech word, in both Shadowlandian and Nûrlâm (non-canonical); source ref. is «MB» (=Mugbûrz):
Spelling in General Mode/Use, with "o" for "u" (as on the inside of the
One Ring).[src]
Encoding still unstable (Unicode: proposed 1997, SMP roadmapped;
CSUR: "").