A noun appearing as G. hemp “a band, bond — cord” in the Gnomish Lexicon of the 1910s based on G. heb- “bind” (GL/48), from the early root ᴱ√HEPE of similar meaning (QL/40).

Neo-Sindarin: In Tolkien’s later writings √KHEP meant “keep”, but I think it could still be the basis for this word. I would use ᴺS. hemp for “band, bond” as metal, leather or cloth strip holding something, but for “cord” I would instead use [N.] nordh.