noun (n)

• the countries of (originally) Europe and (now including) North America and South America(noun.location)

  Synonym:
  west
  

  source: wordnet30
• the hemisphere that includes North America and South America(noun.location)

  Synonym:
  new world, western hemisphere
  

  source: wordnet30
• The part of the horizon where the sun last appears in the evening; that part of the earth towards the sunset; the west; -- opposed to orient. Specifically, in former times, Europe as opposed to Asia; now, also, the Western hemisphere.(noun)

  source: webster1913