alarm clock
NounSynonyms:
alarm
Open English WordNet
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bombasticadjective
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Webster's Dictionary (1913)
Alarm clock, watch
a clock or watch which can be so set as to ring or strike loudly at a prearranged hour, to wake from sleep, or excite attention.
From the entry Alarm.
Alarm clock
. See under Alarm.
From the entry Clock.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54