A name for the end of the world in an early name list (PE13/104), a combination of a (early?) genitive form of irmin “world” with telúme “end”. In the Poetic and Mythological Words of Eldarissa from the 1910s, the world telúme by itself was glossed “the great end” (PME/91).
Early Quenya
irmin
noun. the inhabited world
irmina telume
proper name. End of the World, Great End
A word in the Qenya Lexicon of the 1910s glossed “the inhabited world” and derived from the root ᴱ√IŘI [IÐI] “dwell”, with the usual change of ancient ð > z > r (QL/43). It also appeared in the phrase ᴱQ. Irmina Telume “End of the World, Great End” in a list of names from the same period (PE13/104). In later writings it seems to have been supplanted by Q. Ambar of similar meaning.