Gnomish
gloss
adjective. white, clear white
i·waneth na·dalwint gloss an idril
the beauty of the white feet of Idril
fô
noun. snow
glothrin Archaic
adjective. white, clear white
glui
noun. snow
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A noun for “snow” in the Gnomish Lexicon of the 1910s (GL/35). It was first glossed “a hoard”, probably a cognate of ᴱQ. foa “hoard” under the root the early root ᴱ√FOƷO (QL/38), but its gloss was revised and it was given an new Qenya cognate ᴱQ. fáwe. This change in gloss probably reflects a new root, but nothing in the Qenya Lexicon seems appropriate.