Wordnet 3.0
NOUN (1)
1. 
 the cardinal compass point that is at 0 or 360 degrees; 
[syn: north, due north, northward, N]
WordNet (r) 3.0 (2006):
due north
    n 1: the cardinal compass point that is at 0 or 360 degrees
         [syn: north, due north, northward, N]