Small cake or bread roll (3)
I believe the answer is:
bun
I believe this is a double definition.
'small cake' is the first definition.
(a bun is a small cake)
'bread roll' is the second definition.
(a bun is a bread roll)
(Other definitions for bun that I've seen before include "Hairstyle, cake" , "Small rounded bread or cake" , "Kind of small round cake" , "Something from Bath or Chelsea" , "Small cake; hair style" .)