What is the meaning of go off?

verb

• Run away; usually includes taking something or somebody along.
  • usage: "The thief made off with our silver"; "the accountant absconded with the cash from the safe"
  • synonyms: abscond, bolt, absquatulate, decamp, run off, make off
• Be discharged or activated.
  • usage: "the explosive devices went off"
• Go off or discharge.
  • usage: "The gun fired"
  • synonyms: fire, discharge
• Stop running, functioning, or operating.
  • usage: "Our power went off during the hurricane"
• Happen in a particular manner.
  • usage: "how did your talk go over"
  • synonyms: come off, go over
• Burst inward.
  • usage: "The bottle imploded"
  • synonyms: implode