Hello,

I know what this means litterally, but as an expression? To look back?

//roja

 I`m not sure what you mean but, to look back can mean to look behind you, or we can use it like

look back over your work and check for  any mistakes

look back over your life etc etc

I hope this is what you mean

No, I asked about what geriye dönüp bakmak means?

If you write what you require in the main body of the message, not in it´s title, it would be easier to know what you want.

 It means , to look back