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Meaning of 'Under the knife'

What does the saying 'Under the knife' mean?

Idiom: Under the knife

Meaning:

If a person was under the knife, it means he/she was undergoing surgery.

Country: International English | Subject Area: Health & Medicine | Usage Type: Both or All Words Used
All idioms have been editorially reviewed. Submitted idioms may have been edited for correctness and completeness.
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