alarm
/ˈɑːlɑːrm/Definitions
1. noun
a device that makes a loud noise to alert people of a danger or to wake them up
“She set her alarm for 6 am so she wouldn’t be late for work.”
2. verb
to warn or alert someone of a danger or problem
“The doctor had to alarm the patients about the outbreak of the disease.”
3. verb
to make a loud noise to attract attention
“The fire alarm went off and everyone in the building had to evacuate.”
4. noun
a feeling of anxiety or fear about a potential danger or problem
“The news of the earthquake caused alarm in the community.”