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general::
noun ADJ. approaching The cars had stopped at the sound of the approaching siren. | air-raid, ambulance, factory, police, warning VERB + SIREN put on, sound, switch on The ships all sounded their sirens. | hear SIREN + VERB go (off), sound, start | blare, howl, scream, wail The ambulance sped off with its siren wailing. | die away The police siren died away into the hot night.
Oxford Collocations Dictionary