The Collaborative International Dictionary of English v.0.48:

Northward \North"ward\, a. [AS. nor[eth]weard.]
   Toward the north; nearer to the north than to the east or
   west point.
   [1913 Webster] Northward

The Collaborative International Dictionary of English v.0.48:

Northward \North"ward\, Northwards \North"wards\, adv.
   Toward the north, or toward a point nearer to the north than
   to the east or west point.
   [1913 Webster]

WordNet (r) 3.0 (2006):

northward
    adv 1: in a northern direction; "they earn more up north";
           "Let's go north!" [syn: north, northerly,
           northwards, northward]
    adj 1: moving toward the north; "the northbound lane"; "we took
           the north train"; "the northward flow of traffic" [syn:
           northbound, northward]
    n 1: the cardinal compass point that is at 0 or 360 degrees
         [syn: north, due north, northward, N]