alarm

definition: a device that signals the occurrence of some undesirable event
example:
speech part: noun
synonyms: warning device alarm system
definition: a clock that wakes a sleeper at some preset time
example:
speech part: noun
synonyms: alarm clock
definition: an automatic signal (usually a sound) warning of danger
example:
speech part: noun
synonyms: alert
definition: fear resulting from the awareness of danger
example:
speech part: noun
synonyms: dismay consternation
definition: to warn or arouse to a sense of danger, or to call to a state of preparedness
example: The empty house alarmed me.
speech part: verb
synonyms: alert
definition: to fill with apprehension or alarm
example: I don't mean to alarm you, but your car is on fire.
speech part: verb
synonyms: dismay appall horrify

alarm is explained and pronounced

How alarm is being used?