alarm


alarm (http://definr.com/alarm)

     n 1: fear resulting from the awareness of danger [syn: dismay,
          consternation]
     2: a device that signals the occurrence of some undesirable
        event [syn: warning device, alarm system]
     3: an automatic signal (usually a sound) warning of danger
        [syn: alert, warning signal, alarum]
     4: a clock that wakes sleeper at preset time [syn: alarm clock]
     v 1: fill with apprehension or alarm; cause to be unpleasantly
          surprised; "I was horrified at the thought of being late
          for my interview" [syn: dismay, appal, appall, horrify]
     2: 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" [syn: alert]