east·er·ly /ˈistɚ/
 (a.)東的,向東的,從東的(ad.)向東
 East·er·ly, adv. Toward, or in the direction of, the east.
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 East·er·ly, a.
 1. Coming from the east; as, it was easterly wind.
 2. Situated, directed, or moving toward the east; as, the easterly side of a lake; an easterly course or voyage.
 easterly
      adj 1: lying in or toward the east; "the east side of NY"; "eastern
             cities" [syn: eastern]
      2: from the east; used especially of winds; "an east wind";
         "the winds are easterly" [syn: eastern]
      n : a wind from the east [syn: east wind, easter]
      adv : from the east; "the winds blew easterly all night" [ant: westerly]