definition of
alarm

[1] #1 alarm n. [dismay, consternation] fear resulting from the awareness of danger. wn

[2] #2 alarm n. [warning device, alarm system] a device that signals the occurrence of some undesirable event. wn

[3] #3 alarm v. [dismay, appal, appall, horrify] fill with apprehension or alarm; cause to be unpleasantly surprised; "I was horrified at the thought of being late for my interview"; "The news of the executions horrified us". wn

[4] #4 alarm v. [alert] warn or arouse to a sense of danger or call to a state of preparedness; "The empty house alarmed him"; "We alerted the new neighbors to the high rate of burglaries". wn

[5] #5 alarm n. [alert, warning signal, alarum] an automatic signal (usually a sound) warning of danger. wn