noun
definition
A summons to arms, as on the approach of an enemy.
definition
Any sound or information intended to give notice of approaching danger; a warning sound to arouse attention; a warning of danger.
definition
A sudden attack; disturbance.
definition
Sudden surprise with fear or terror excited by apprehension of danger; in the military use, commonly, sudden apprehension of being attacked by surprise.
definition
A mechanical device for awaking people, or rousing their attention.
example
The clock radio is a friendlier version of the cold alarm by the bedside.
definition
An instance of an alarm ringing, beeping or clanging, to give a noise signal at a certain time.
example
You should set the alarm on your watch to go off at seven o'clock.