north·west·ern /-ˈwɛstɚ/
  (a.)在西北部的,西北方的,來自西北的
  North·west·ern a. Of, pertaining to, or being in, the northwest; in a direction toward the northwest; coming from the northwest; northwesterly; as, a northwestern course.
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  northwestern
       adj 1: situated in or oriented toward the northwest [syn: northwesterly,
               northwest]
       2: of a region of the United States generally including
          Washington; Oregon; Idaho; and sometimes Montana; Wyoming