Cut rolls sent back (4)
I believe the answer is:
snub
'cut' is the definition.
(I've seen this before)
'rolls sent back' is the wordplay.
'rolls' becomes 'buns' ('bun' can be a synonym of 'roll').
'sent back' is a reversal indicator.
'buns' back-to-front is 'SNUB'.
(Other definitions for snub that I've seen before include "16" , "Rude put-down; blunt (nose)" , "Spurn; (of nose) turned up at the end" , "'Rebuff, ignore (4)'" , "Rebuff humiliatingly" .)