- 1a device that makes a long loud sound as a signal or warning an air-raid siren A police car raced past with its siren wailing.
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- 2(in ancient Greek stories) any of a group of sea creatures that were part woman and part bird, or part woman and part fish, whose beautiful singing made sailors sail toward them into rocks or dangerous waters
- 3a woman who is very attractive or beautiful but also dangerous
- 4siren voices/song/call (literary) the temptation to do something that seems very attractive but that will have bad results The government must resist the siren voices calling for tax cuts.
Check pronunciation: siren