From The Collaborative International Dictionary of English v.0.48:
Norn \Norn\, Norna \Nor"na\, n. [Icel. norn, pl. nornir.]
1. (Scandinavian Myth.) Any one of the three Fates, Past,
Present, and Future. Their names were Urd, Verdandi, and
Skuld. They are identified with the Anglo-Saxon Wyrd, and
are similar to the Greek Moirae and Roman Parcae.
[1913 Webster + WordNet 1.5]
2. A tutelary deity; a genius.
[1913 Webster]