blue box

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noun

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

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Origin of blue box

First recorded in 1975–80

Words nearby blue box

blueblossom, bluebonnet, blue book, bluebottle, bluebottle fly, blue box, blue buck, bluebush, blue catfish, blue cattle dog, blue cheese

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use blue box in a sentence

On offense, they dotted the 3-point line with shooters, a habit drilled in by taping blue boxes down on their practice court, and gave the ball to Antetokounmpo over and over.
The Bucks Are Trying To Win In Clutch Time Without Giving Giannis The Ball|Yaron Weitzman|March 12, 2021|FiveThirtyEight
To use it, start at the blue box at the top and let yourself be guided by your answers to each question.
Why SEOs should care about brand|Robin Lord|July 31, 2020|Search Engine Land
Clad in a blue, striped button-down, a silver watch adorning his left wrist, Huckabee beams on the cover.
Huckabee 2016: Bend Over and Take It Like a Prisoner!|Olivia Nuzzi|January 8, 2015|DAILY BEAST
Yeah, the “Giant man-puppy” that is Gronkowski won't hold a sexual candle to the blue-eyed dreamboat.
‘A Gronking to Remember’ Speed Read: 8 Naughtiest Bits|Emily Shire|January 7, 2015|DAILY BEAST

GOP leaders refused; they saw that Duke was pulling blue-collar Democrats to the party.
The Louisiana Racists Who Courted Steve Scalise|Jason Berry|January 3, 2015|DAILY BEAST
In response to the screen quota cut, South Korea established a “cinema tax” on the box office.
Propaganda, Protest, and Poisonous Vipers: The Cinema War in Korea|Rich Goldstein|December 30, 2014|DAILY BEAST
He goes into some detail into what it took to persuade voters to pass marriage equality at the ballot box in four states in 2012.
The Real Story Behind the Fight for Marriage Equality|E.J. Graff|December 30, 2014|DAILY BEAST
In pursuing his alchemical researches, he discovered Prussian blue, and the animal oil which bears his name.
The Every Day Book of History and Chronology|Joel Munsell
Beside her was a box of bonbons, which she held out at intervals to Madame Ratignolle.
The Awakening and Selected Short Stories|Kate Chopin
Mary is fair as the morning dew— Cheeks of roses and ribbons of blue!
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
His nose was hooked and rather large, his eyes were blue, bright as steel, and set a trifle wide.
St. Martin's Summer|Rafael Sabatini
Now and then the boy who had bought Squinty, and who was taking him home, would look around at his pet in the slatted box.
Squinty the Comical Pig|Richard Barnum

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