go west

verb4

1. •
   (figurative, old-fashioned) To be lost, destroyed, or otherwise ruined.

   • The glare of a burning house shone red in the sky over the roof tops. 'Somebody's 'appy 'ome gone west', remarked one man. — 1916
2. •
   (figurative, old-fashioned) Synonym of die.

   • Och, your ma's gone west, dearie. You'll hear her voice no more.
3. •
   (US) To move to the American West, particularly (historical) during the 19th century era.

   • Go west, young man!
4. •
   Synonym of set: to move toward the western horizon, to go down.