Definition of black out in English:

black out

phrasal verb

  • (of a person) undergo a sudden and temporary loss of consciousness.

    ‘they knocked me around and I blacked out’
    • ‘He believes he blacked out at least five times before he regained consciousness in the shallows by the river bank.’
    • ‘The sound of the report still echoed in his ears, and with this as his lullaby, he finally lost consciousness and blacked out.’
    • ‘He could feel his consciousness shutting down, blacking out…’
    • ‘For a second, the world began to spin, and she was afraid she might black out, but that passed.’
    • ‘The last thing she heard before she blacked out was a sudden increase in noise and panic.’
    • ‘Shirley's breathing became so distorted that by the time he faded to just six breaths per minute and then lost consciousness, Shirley was also on the verge of blacking out.’
    • ‘He felt something warm splash him just before he gave up his hold on consciousness and blacked out.’
    • ‘This sort of thing happens to her all the time - and the cure will be more drink, until she blacks out again.’
    • ‘His agent, who is planning a controversial exhibit of the photos Alex took just prior to blacking out underwater, is pressuring him to attend the show's opening.’
    • ‘He was about to take his first step into the desert when all of a sudden he blacked out.’
    faint, lose consciousness, pass out, collapse, keel over
    flake out, conk out, go out
    swoon
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