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jack in

British  

verb

  1. slang (tr, adverb) to abandon or leave (an attempt or enterprise)

"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

Example Sentences

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Farron's flag also featured a union jack in one corner.

From BBC ● Sep. 20, 2025

“Magazines; more records; books; memorabilia; programs; CDs; VHS; stacking dolls. There’s a jack in the box with a Barbra inside; a Fabergé-style egg.”

From Los Angeles Times ● Dec. 18, 2023

It’s typically connected to a cable jack in your wall.

From Washington Post ● Mar. 3, 2023

Both models also offer dual far-field studio mics, Wi-Fi 6, and Bluetooth support, and each comes equipped with a 3.5mm headphone jack in addition to the usual Surface Connect port.

From The Verge ● Sep. 29, 2021

I have a hard time looking jack in the eye, even though we’re friends now.

From "The House That Lou Built" by Mae Respicio

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