WordNet sense 1 (the compass point midway between north and west; at 315 degrees):

northwestward, nor'-west, NW

WordNet sense 2 (the northwestern region of the United States):

northwestern United States

WordNet sense 3 (coming from the northwest):

northwesterly

WordNet sense 4 (situated in or oriented toward the northwest):

northwestern

WordNet sense 5 (situated in or facing or moving toward or coming from the north):

north

WordNet sense 6 (to, toward, or in the northwest):

north-west