Source : Webster's Revised Unabridged Dictionary (1913)

Norn \Norn\, Norna \Nor"na\, n. [Icel. norn, pl. nornir.]
   1. (Scandinavian Myth.) One of the three Fates, Past,
      Present, and Future. Their names were Urd, Verdandi, and
      Skuld.

   2. A tutelary deity; a genius.

Source : WordNet®

Norn
     n : (Norse mythology) any of the three Fates or goddesses of
         destiny; identified with Anglo-Saxon Wyrd; similar to
         Greek Moirae and Roman Parcae