A word appearing as G. {fidhra >>} fidhrad hairy, hirsute” in the Gnomish Lexicon of the 1910s, an adjectival form of fidhra “collective hair” (GL/35).
Gnomish
fidhra
noun. collective hair
fidhrad
adjective. hairy, hirsute
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 appearing as G. fidhra “collective hair” in the Gnomish Lexicon of the 1910s (GL/35) clearly derived from the early root ᴱ√FIŘI [FIÐI] (QL/38). It may refer to “✱all hair on the body” given its elaboration G. fidhrad “hairy, hirsute”.
Neo-Sindarin: I would adapt this word as ᴺS. fidhras, generalized from the adjective ᴺS. fidhren “having hair”.