Cut rolls on the way back (4)
I believe the answer is:
snub
'cut' is the definition.
(I've seen this before)
'rolls on the way back' is the wordplay.
'rolls' becomes 'buns' ('bun' can be a synonym of 'roll').
'on the way back' says the letters should be written in reverse.
'buns' in reverse letter order is 'SNUB'.
(Other definitions for snub that I've seen before include "Shun" , "Cold-shoulder" , "Refuse to acknowledge" , "Reject a person with cold behaviour" , "Rebuff; brush-off" .)