alarm : Idioms & Phrases

• noun the sound of an alarm (usually a bell)
  tocsin.
  

WordNet

• a bell that gives notice on danger.

Webster 1913

• noun a clock that wakes a sleeper at some preset time
  alarm.
  

WordNet

• a clock or watch which can be so set as to ring or strike loudly at a prearranged hour, to wake from sleep, or excite attention.

Webster 1913

• a contrivance attached to a steam boiler for showing when the pressure of steam is too high, or the water in the boiler too low.

Webster 1913

• a place to which troops are to repair in case of an alarm.

Webster 1913

• noun a device that signals the occurrence of some undesirable event
  alarm; warning device.
  

WordNet

• noun a loud warning signal produced by a burglar alarm
  
  • they could hear the burglar alarm a mile away
• noun a warning device that is tripped off by the occurrence of a burglary
  

WordNet

• a device for giving alarm if a door or window is opened from without.

Webster 1913

• a bell signal constructed to operate on the theory that a few seconds before the occurrence of an earthquake the magnet temporarily loses its power.

Webster 1913

• noun a warning that is given about something that fails to occur
  

WordNet

• noun a shout or bell to warn that fire has broken out
  
• noun an alarm that is tripped off by fire or smoke
  fire alarm.
  

WordNet

• (a) A signal given on the breaking out of a fire. (b) An apparatus for giving such an alarm.

Webster 1913

• a bell, horn, whistle or other contrivance that sounds an alarm, often automatically, near places of danger where visible signals would be hidden in thick weather.

Webster 1913

• (Steam Boiler), a contrivance of various forms attached to a boiler for giving warning when the water is low.

Webster 1913

• noun an alarm that is tripped off by fire or smoke
  fire alarm.
  

WordNet

• a device for sounding an alarm when a money drawer is opened or tampered with.

Webster 1913