One can call it bread (4)
I believe the answer is:
roll
'bread' is the definition.
(I know that roll is a type of bread)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for roll that I've seen before include "Sound of a drum or a list of names" , "bakery's product" , "Small rounded bread" , "Eg, bap" , "Bun" .)