Alarm is defined as a device or call announcing a warning or danger.(noun)
A smoker detector is an example of an alarm.
The definition of alarm is to warn of danger or to make someone afraid or distressed.(verb)
See alarm in Webster's New World College Dictionary
Origin: ME alarme < OFr < It all'arme, to arms
See alarm in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old French alarme
Origin: , from Old Italian allarme
Origin: , from all'arme, to arms
Origin: : alla, to the (from Latin ad illa : ad, to; see ad- + illa, neuter pl. of ille, that, the; see al-1 in Indo-European roots)
Origin: + arme, arms (from Latin arma; see ar- in Indo-European roots).
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