Nibelungs \Ni"be*lungs\, n. pl.; sing. {Nibelung}.
In German mythology, the children of the mist, a race of
dwarfs or demonic beings, the original possessors of the
famous hoard and ring won by Siegfrid; also, the Burgundian
kings in the Nibelungenlied.
[Webster 1913 Suppl.]