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Difference between Black box and Dark box

black box— 1. a flight recorder in an aircraft: The flight recorder is an indestructible “black box” which automatically records the key functions in the aircraft. 2. any apparatus of unknown internal design: Crime squads are searching for the manufacturer of a black box which contains a device that can reverse electricity meter readings. 3. […]

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Difference between Black book and Little black book

black book— 1. a register listing persons that have committed offences against morality, etc.: The German government was in a position to blackmail 47,000 prominent British “perverts” whose names figured in a “black book.” Cf.: be in someone’s black books—be out of favor with a person: Beatrice managed to leave a very uncomfortable impression upon […]

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Difference between Big stick and Big sticks

big stick—a display of force or power: Happily the revolution in Paraguay is too far down in South America to arouse the “big stick” in Washington. big sticks— 1. (Loggers) a forest or trees: Felling one of these “big sticks” is a dangerous occupation, says Howard, a lifelong logger. 2. (Austral. sl.) Australian rules football […]

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