Noldorin
rhim
noun. cold pool or lake (in mountains)
rhim
noun. crowd, host
rhim
noun. cold pool or lake (in mountains)
rhim
noun. crowd, host, great number
rhimb
noun. cold pool or lake (in mountains)
rhimb
noun. crowd, host, great number
lhîn
noun. pool
lhîn
noun. pool
liniath
noun. pools
ovras
noun. crowd, heap.
A noun in The Etymologies of the 1930s given as N. rhim “cold pool or lake (in mountains)” derived from the root ᴹ√RINGI “cold” (Ety/RINGI). This word is the final element of N. Mithrim “✱Grey Lake” in The Etymologies, but in later writings Tolkien explained this name differently, deriving the name from the Elves that lived around the lake, so it may have been abandoned.
Neo-Sindarin: If adapted to Neo-Sindarin, this word would be ᴺS. rim. Since √RINGI “cold” survived in later writings, this word may still be viable, though it would conflict with S. rim “host, a great number”.