a clock with a device that can be made to sound at the time set in advance, used to wake someone up.
đồng hồ có thiết bị có thể phát ra âm thanh vào thời gian đã đặt trước, được sử dụng để đánh thức ai đó.
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Definition of alarm clock
alarm clocknoun
đồng hồ báo thức
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The term "alarm clock" actually comes from two separate words: "alarm" and "clock." "Alarm" originates from the French word "alarme," which comes from the Italian "all'arme," meaning "to arms!" This refers to the loud warning signal that early alarm clocks produced, originally a bell. "Clock" has a more complex history, with its roots in the Old English word "clocca," likely borrowed from Latin. So, the term "alarm clock" signifies a device that utilizes a loud "alarm" to wake someone up at a specific time set on a "clock."
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