Sindarin name of Treebeard (LotR/464), more literally translated “beard-(of)-tree” (LotR/1131, PE17/84). His name is a combination of fang “beard” and orn “tree” (SA/orn, PE17/84).
Conceptual Development: In Lord of the Rings drafts from the 1940s, his name also appeared as N. Fangorn “Treebeard” (TI/412).
The Sindarin word for “beard”, best known as an element in the name S. Fangorn “Treebeard, (lit.) beard of tree” (LotR/1131, PE17/84). The word dates all the way back to the Gnomish Lexicon of the 1910s where it appeared as G. fang “a long beard” (GL/34), though in that document it had a rejected variant bang “beard” (GL/21). ᴱN. fang “beard” appeared in Early Noldorin Word-lists of the 1920s (PE13/143), and N. fang “beard” appeared in The Etymologies of the 1930s under the root ᴹ√SPANAG (Ety/SPÁNAG). Thus this word was well established in Tolkien’s mind.