CEFR B1

siren

noun

Meaning

A device that produces a loud, high-pitched warning sound, typically mounted on emergency vehicles or used in public alarm systems.

Examples

  • The ambulance siren blared as it navigated through the heavy afternoon traffic.
  • A loud air-raid siren sounded across the city to signal the start of the safety drill.

Synonyms: alarm, warning, hooter, klaxon