Definition of blue box in English:

blue box

Syllabification: blue box

noun

  • chiefly US An electronic device used to access long-distance telephone lines illegally.
    More example sentences
    • 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.

More definitions of blue box

Definition of blue box in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
noun
a powerful whirlpool in the sea