Definition of blue box in English:

blue box

Translate blue box into Spanish


mainly US
  • An electronic device used to access long-distance phone lines illegally.

    ‘In 1971, they manufactured hordes of the blue boxes and sold them to students in the Berkeley dorms.’
    • ‘Legend has it that the two novice entrepreneurs sold the blue boxes door-to-door on the Berkeley campus, several years before they founded their computer company.’


blue box

/ˌblo͞o ˈbäks/ /ˌblu ˈbɑks/