knock oneself out

idiom

Definition of knock oneself out

1 : to cause oneself to become unconscious He hit his head against the table when he fell and knocked himself out.
2 informal : to make oneself very tired by doing work I knocked myself out to get the job done on time.
3 US used to tell someone to go ahead and do something "Do you mind if I use this exercise machine first?" "Knock yourself out."

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Dictionary Entries Near knock oneself out

knock-on effect

knock oneself out

knock on the door of

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Cite this Entry

“Knock oneself out.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/knock%20oneself%20out. Accessed 22 Jan. 2022.

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