know something like the back of one's hand

idiom

: to know something completely
I know this town like the back of my hand.

Dictionary Entries Near know something like the back of one's hand

Cite this Entry

“Know something like the back of one's hand.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know%20something%20like%20the%20back%20of%20one%27s%20hand. Accessed 7 Dec. 2022.

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