In 2014, which major dictionary publisher had to recall an entire print run due to the accidental inclusion of a vulgar definition that went undetected during editing?

In the world of language and linguistics, even dictionaries and language learning tools face product recalls. This trivia question focuses on one of the most significant dictionary recalls in recent history, where a major publisher had to pull thousands of copies due to a serious content error. Test your knowledge about this fascinating intersection of publishing quality control and linguistic accuracy!

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Oxford University Press
Merriam-Webster
Collins Dictionary
Cambridge University Press