black out - definition and synonyms

phrasal verb
present tense
I/you/we/theyblack out
he/she/itblacks out
present participleblacking out
past tenseblacked out
past participleblacked out
  1. 1
    [intransitive] to suddenly become unconscious

    He had blacked out as his car hit the tree.

  2. 2
    [transitive] to prevent someone from reading or seeing something by covering it with something dark

    Half the pages in the report had been blacked out for security reasons.

  3. 3
    [transitive] to make a place dark by turning off all the lights, for example so that the enemy cannot see a place at night.
See also main entry: black