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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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“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 has sadly forfeited its headphone jack in the process, but overall it’s a solid device that brings a fully refreshed design to Apple’s small tablet form factor.

From The Verge Dec. 13, 2021

It’s the hottest, pepper-iest pepper jack in the world.

From Washington Post Jun. 19, 2019

During the investigation officers also found Wallace's Facebook page featured pictures of him holding up an England flag with a union jack in the corner and the words "Bridgeton Loyal" emblazoned on the front.

From BBC Feb. 27, 2019

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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