?ᴱ√FAKA root. “cut”
A hypothetical early root to explain words in the Gnomish Lexicon of the 1910s such as G. fag- “cut” and G. fanc “cut” (GL/33). It might be related to ᴱ√FḶKḶ “cleave, hew”. There are no signs of this root in Tolkien’s later writing.