Bagel or bun (4)
I believe the answer is:
roll
This clue is a double definition.
'bagel' is the first definition.
(I've seen this in another clue)
'bun' is the second definition.
(I know that bun can be written as roll)
(Other definitions for roll that I've seen before include "Bun" , "Press" , "Schedule" , "Turn from side to side" , "Go over and over" .)