alarm

1. n. A summons to arms, as on the approach of an enemy. Source: opted

2. n. Any sound or information intended to give notice of approaching danger; a warning sound to arouse attention; a warning of danger. Source: opted

3. n. A sudden attack; disturbance; broil. Source: opted

4. n. Sudden surprise with fear or terror excited by apprehension of danger; in the military use, commonly, sudden apprehension of being attacked by surprise. Source: opted

5. n. A mechanical contrivance for awaking persons from sleep, or rousing their attention; an alarum. Source: opted

6. v. t. To call to arms for defense; to give notice to (any one) of approaching danger; to rouse to vigilance and action; to put on the alert. Source: opted

7. v. t. To keep in excitement; to disturb. Source: opted

8. v. t. To surprise with apprehension of danger; to fill with anxiety in regard to threatening evil; to excite with sudden fear. Source: opted

9. n. fear resulting from the awareness of danger Source: wordnet

10. n. a device that signals the occurrence of some undesirable event Source: wordnet

11. n. an automatic signal (usually a sound) warning of danger Source: wordnet

12. n. a clock that wakes a sleeper at some preset time Source: wordnet

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