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Phrase(s): black something out
1. Lit. to cut or turn out the lights or electric power. • The lightning strike blacked the entire town out. • The manager blacked out the whole building during the emergency to prevent an explosion. 2. Fig. to prevent the broadcast of a specific television or radio program in a specific area. • Will they black the game out around here? • They blacked out the basketball game in this area., Phrase(s): black out
1. Lit. [for lights] to go out. • Suddenly the lights blacked out. • The power went dead and everything blacked out from the heat. 2. Fig. to pass out; to become unconscious. • After I fell, I must have blacked out. • I think I am going to black out.
McGrawhill's American Idioms And Phrasal Verbs
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1. Obliterate with black, as in crossing out words on a page or print on a screen. For example, They have blacked out all the obscene words in the subtitles to make this movie suitable for youngsters. This usage may be derived from an earlier meaning, "to stain or defame," which dates from the 15th century (and probably alludes to "blackening" a person's reputation). [Mid-1800s] 2. Extinguish all lights. For example, The whole town was asleep, as blacked out as London during the war. In the early 1900s this expression alluded to the lights in a theater, but from about 1940 on it meant darkening an entire city to hide it from enemy bombers. 3. Lose consciousness, faint; also, experience a temporary loss of memory. For example, I couldn't remember a single note of the music; I blacked out completely, or The accused man claims he blacked out after his first drink. This usage is thought to have originated with pilots, who sometimes fainted briefly when pulling out of a power dive. It soon was transferred to other losses of consciousness or memory. [c. 1940]
American Heritage Idioms