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Definition 2024


know_like_the_back_of_one's_hand

know like the back of one's hand

English

Alternative forms

Verb

know (something) like the back of one's hand

  1. (transitive, idiomatic) To be intimately knowledgeable about something, especially a place.
    He knows the software like the back of his hand, and can often solve problems over the phone, without looking.

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