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English definition of “know sth like the back of your hand”

know sth like the back of your hand

informal
to have very good and detailed knowledge of something: I know this area like the back of my hand.Knowing and learning
(Definition of know sth like the back of your hand from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “know sth like the back of your hand”

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