go under the knife

idiom

Definition of go under the knife

informal
: have a medical operation : have surgery I'm going under the knife tomorrow.

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Cite this Entry

“Go under the knife.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/go%20under%20the%20knife. Accessed 5 Jun. 2020.

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