Know-like-the-back-of-one-s-hand definition
(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.
verb
Advertisement
Alternative Forms
Alternative Form of know-like-the-back-of-one-s-hand -
know-like-the-palm-of-one-s-hand