What is the meaning of obliterate?

verb

• Mark for deletion, rub off, or erase.
  • usage: "kill these lines in the President's speech"
  • synonyms: kill, wipe out
• Make undecipherable or imperceptible by obscuring or concealing.
  • usage: "a hidden message"; "a veiled threat"
  • synonyms: obscure, blot out, veil, hide
• Remove completely from recognition or memory.
  • usage: "efface the memory of the time in the camps"
  • synonyms: efface
• Do away with completely, without leaving a trace.

adjective

• Reduced to nothingness.
  • synonyms: blotted out, obliterated