WordNet sense 1 (the direction in which a compass needle points):

compass north, magnetic north

WordNet sense 2 (the cardinal compass point that is at 0 or 360 degrees):

n, due north

WordNet sense 3 (British statesman under George III whose policies led to rebellion in the American colonies (1732-1792)):

Frederick North, Second Earl of Guilford

WordNet sense 4 (the United States (especially the northern states during the American Civil War)):

union

WordNet sense 5 (any region lying in or toward the north):

northland, septentrion

WordNet sense 6 (situated in or oriented toward the north):

northerly

WordNet sense 7 (moving toward the north):

northward

WordNet sense 8 (in a northern direction):

northwards, in the north, to the north