black out Meaning, Definition & Usage

  1. verb obliterate or extinguish
    • Some life-forms were obliterated by the radiation, others survived
  2. verb darken completely
    blacken out.
    • The dining room blackened out
  3. verb suppress by censorship as for political reasons
    • parts of the newspaper article were blacked out
  4. verb lose consciousness due to a sudden trauma, for example
    zonk out; pass out.

WordNet