Walked with head out of sight and bent (6)
I believe the answer is:
arched
'bent' is the definition.
(arching is a kind of bending)
'walked with head out of sight' is the wordplay.
I cannot quite see how this works, but
'head' could be 'arch' ('arch' can be a synonym of 'head') and 'arch' is present in the answer.
The remaining letters 'ed' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'and' acts as a link.
Can you help me to learn more?
(Other definitions for arched that I've seen before include "Like the back of a hostile cat" , "Bent" , "Forming a curved span" , "Curved (over an opening)" , "Curved up in the centre" .)