A noun appearing as G. mirobin “grape” in the Gnomish Lexicon of the 1910s (GL/57). Its initial element is G. mîr or miros “wine” and its second element is probably a reduced form of G. pibin “small berry”, hence: “*wine berry”.

Neo-Quenya: For purposes of Neo-Sindarin I would adapt this word as ᴺS. mirybin, updating the initial element to miru- as seen in S. miruvor, but with the u becoming y via i-affection.