Definition of black out in English:

black out

  • (Of a person) undergo a sudden and temporary loss of consciousness: they knocked me around and I blacked out
    More example sentences
    • He could feel his consciousness shutting down, blacking out…
    • The sound of the report still echoed in his ears, and with this as his lullaby, he finally lost consciousness and blacked out.
    • The last thing she heard before she blacked out was a sudden increase in noise and panic.
    faint, lose consciousness, pass out, swoon
    informal go out
See parent entry: black

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody