Definitions of go down:

• verb:   be recorded or remembered

  Example: "She will go down as the first feminist"

• verb:   be defeated

  Example: "If America goes down, the free world will go down, too"

• verb:   be ingested

  Example: "The food wouldn't go down"

• verb:   grow smaller
• verb:   stop operating
• verb:   disappear beyond the horizon
• verb:   move downward and lower, but not necessarily all the way
• verb:   go under, "The raft sank and its occupants drowned"