siren

Word family

• siren-like
  adjectiveC2

Synonym discussion

Sense: noun/1

A 'siren' is a specific device that makes a loud, wailing, rising-and-falling sound, used mainly on emergency vehicles (ambulances, police cars, fire trucks) and for storm warnings. An 'alarm' is a much broader term covering any signal — bells, beeps, lights, or sirens — that warns of danger or a scheduled event. A 'horn' produces a short, powerful blast (car horn, fog horn) rather than a continuous wail. A 'buzzer' makes a low, repetitive electronic sound, common in timers or doorbells. A 'whistle' is a small device you blow into, producing a high-pitched piercing sound, often used by referees or lifeguards. Choose 'siren' when the key feature is the loud, fluctuating howl that travels over long distances and cuts through traffic noise.

Common collocations

Etymology

The word comes from the ancient Greek 'Seirēn' (Σειρήν), the name of the half-woman, half-bird mythical beings whose singing lured sailors to their deaths. Latin borrowed it as 'Siren', and Old French passed it into English by the 1300s, originally for the mythological creature. In the 1800s, inventors borrowed the name for a new warning device because its loud, penetrating sound — like the mythical voice — was impossible to ignore.