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definitions

blue box

noun

an electronic device used by phone phreaks to send out signals that unlock long-distance telephone circuits.

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Nearby words

  1. blue bag,
  2. blue beret,
  3. blue billy,
  4. blue blood,
  5. blue book,
  6. blue buck,
  7. blue cataract,
  8. blue catfish,
  9. blue cattle dog,
  10. blue cheese

Origin of blue box

First recorded in 1975–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for blue box

blue box

noun

Canadian a blue plastic container for domestic refuse that is to be collected and recycled
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012