alarm Meaning and Definition

1. n. a device that signals the occurrence of some undesirable event

2. n. a clock that wakes sleeper at preset time

3. n. an automatic signal (usually a sound) warning of danger

4. n. fear resulting from the awareness of danger

5. v. warn or arouse to a sense of danger or call to a state of preparedness

6. v. fill with apprehension or alarm; cause to be unpleasantly surprised