NORTHWESTERN
northwestern
(adjective) of a region of the United States generally including Washington; Oregon; Idaho; and sometimes Montana; Wyoming
northwestern, northwesterly, northwest
(adjective) situated in or oriented toward the northwest
Source: WordNet® 3.1
Etymology
Adjective
northwestern (comparative more northwestern, superlative most northwestern)
Of or pertaining to the northwest; from or to in such a direction.
(of wind) blowing from that direction
Source: Wiktionary
North`west"ern, a.
Definition: Of, pertaining to, or being in, the northwest; in a direction
toward the northwest; coming from the northwest; northwesterly; as, a
northwestern course.
Source: Webster’s Unabridged Dictionary 1913 Edition