The Collaborative International Dictionary of English v.0.48:

Njord \Njord\, Njorth \Njorth\n. (Teutonic mythology)
   Chief of the Vanir; god of the sea and winds and prosperity;
   father of Frey and Freya; sometimes subsumes Teutonic
   Nerthus.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

Njord
    n 1: (Norse mythology) chief of the Vanir; god of the sea and
         winds and prosperity; father of Frey and Freya; sometimes
         subsumes Teutonic Nerthus [syn: Njord, Njorth]