| 1. | a false report of a fire in progress to a fire department. |
| 2. | something that excites unfounded alarm or expectation: Rumors of an impending transit strike proved to be a false alarm. |

| false alarm n.
|
false alarm
A warning signal that is groundless, made either by mistake or as a deliberate deception. For example, The rumor that we were all going to get fired was just a false alarm, or Setting off a false alarm is a criminal offense. This expression, first recorded in 1579, today is often used for a report of a nonexistent fire.