Adjective southwest has 2 senses
  1. southwesterly, southwest - coming from the southwest; "the winds are southwesterly"
    Antonym: north (indirect, via south)
  2. southwest, southwestern, southwesterly - situated in or oriented toward the southwest
    Antonym: north (indirect, via south)
,Noun southwester has 1 sense
  1. southwester, sou'wester - a strong wind from the southwest
    --1 is a kind of wind, air current, current of air
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