to know something like the back of one's hand
to know something like the back of one's hand
01
to be well-informed about or completely familiar with something
![to [know] {sth} like the back of {one's} hand definition and meaning](https://cdn.langeek.co/photo/44754/original/?type=jpeg "to [know] {sth} like the back of {one's} hand definition and meaning")
Idiom
Informal
Exempel
I've lived in this town for years, so I know the streets like the back of my hand.
After working at the company for a decade, I know its policies and procedures like the back of my hand.
