Q. Luvailin loc. “Shadowmere”

Q. Luvailin, loc. “Shadowmere”
A mere (lake) in Eldamar under the shadow of Oiolossë, mentioned only in Tolkien’s “Unfinished Index” of The Lord of the Rings (RC/217). Its second element is likely ailin “lake”, and its initial element is probably some derivative of the root √LUM “shadow, darkness”.

Reference ✧ RC/217 ✧ “Shadowmere”

Elements

LUM “shadow, darkness”
ailin “a large lake”