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Definition of alarm clock noun from the Oxford Advanced Learner's Dictionary

alarm clock

noun
 
/əˈlɑːm klɒk/
 
/əˈlɑːrm klɑːk/
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  1. a clock that you can set to ring a bell, etc. at a particular time and wake you up
    • I set the alarm clock for 7 o'clock.
    see also alarm (3)
    Extra Examples
    • I've set my alarm clock for six tomorrow.
    • My alarm clock didn't go off this morning.
See alarm clock in the Oxford Advanced American Dictionary
previously
adverb
 
 
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