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black out

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phrasal verb
Word Forms
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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 after 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.

See also main entry: black

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