west·er·ly /ˈwɛstɚ/
 (a.)向西的,自西的(ad.)向西,往西,自西西風
 West·er·ly, a. Of or pertaining to the west; toward the west; coming from the west; western.
 West·er·ly, adv. Toward the west; westward.
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 westerly
      adj 1: lying in or toward the west [syn: western]
      2: of wind; from the west [syn: western]
      3: moving toward the west; "westbound pioneers" [syn: westbound,
          westward]
      n : the west-to-east winds that occur in the temperate zones of
          the Earth [syn: prevailing westerly]
      adv 1: toward the west; "we began to steer away westerly"- Daniel
             Defoe
      2: from the west; "the wind blew westerly" [ant: easterly]