An Etymological Dictionary of the German Language/Annotated/Nobistrug

by Friedrich Kluge

Nobistrug, masculine, ‘underwold, hell,’ borrowed, like Krug, ‘tavern,’ the second part of the compound, in early Modern High German from Low German. The first component is Middle High German abis, abyss, masculine, ‘abyss,’ whence with n prefixed (compare Italian nabisso, from the usual combination in abysso), the Low German form Nobisfrung, hence literally ‘tavern in hell’