black out

vi \(ˈ)blak-ˈau̇t\

Medical Definition of BLACK OUT

: to undergo a temporary loss of vision, consciousness, or memory (as from temporary impairment of cerebral circulation, retinal anoxia, a traumatic emotional blow, or an alcoholic binge)—compare gray out, red out

transitive verb

: to cause to black out

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Spanish Central: Spanish translation of "black out"

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