westwards

from WordNet (r) 3.0 (2006)

westwards
    adv 1: toward the west; "they traveled westward toward the
           setting sun" [syn: {westward}, {westwards}]

from The Collaborative International Dictionary of English v.0.48

Westward \West"ward\, Westwards \West"wards\, adv. [AS.
   westweard. See {West}, and {-ward}. ]
   Toward the west; as, to ride or sail westward.
   [1913 Webster]

         Westward the course of empire takes its way.
                                                  --Berkeley.
   [1913 Webster]