Synonyms of 'siren'
It sounds like an air raid siren.
Copyright © 2016 by HarperCollins Publishers. All rights reserved.
As soon as the door opened he heard the alarm go off.
An alert is a situation in which people prepare themselves for something dangerous that might happen soon.
Due to a security alert, the train did not stop at our station.
Thesaurus for siren from the Collins English Thesaurus
A siren is a warning device which makes a long, loud noise . Most fire engines , ambulances , and police cars have sirens.