know like the back of hand


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Related to know like the back of hand: know like the back of one's hand

know something like the back of your hand

to be very familiar with something He knows the nighttime sky like the back of his hand.
Related vocabulary: know something backwards and forwards
Etymology: based on the idea that you know what your own hand is like very well
See also: back, hand, know, like, of

know something like the back of your hand

  (informal)
to know a place very well He knew East London like the back of his hand.
See also: back, hand, know, like, of