- Alarm is defined as a device or call announcing a warning or danger.
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.
- An example of alarm is Paul Revere riding through the towns to warn the people that the British were near.
- An example of alarm is to sneak up behind a person and shout to scare him or her.
A smoke detector is a type of alarm.
alarm definition by Webster's New World
- Archaic a sudden call to arms
- a signal, sound, cry, etc. that is a warning of danger
- a mechanism designed to warn of danger or trespassing: a burglar alarm
- the bell, buzzer, etc. of an alarm clock
- fear caused by the sudden realization of danger
Origin: Middle English alarme ; from Old French ; from Italian all'arme, to arms
- to warn of approaching danger
- to make suddenly afraid or anxious; frighten
alarm definition by American Heritage Dictionary
- A sudden fear caused by the realization of danger.
- A warning of existing or approaching danger.
- An electrical, electronic, or mechanical device that serves to warn of danger by means of a sound or signal.
- The sounding mechanism of an alarm clock.
- A call to arms.
Origin: Middle English, from Old French alarme, from Old Italian allarme, from all'arme, to arms : 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) + arme, arms (from Latin arma; see ar- in Indo-European roots).
- a·larmˈing·ly adverb