blues and twos

English

Noun

blues and twos pl (plural only)

  1. (chiefly UK, Ireland, informal, law enforcement) The flashing blue lights and (originally) two-tone siren of a police vehicle.
    • 2019, Kate Atkinson, Big Sky, →ISBN, page 112:
      They grinned at each other and hit their blues and twos.

Further reading
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