Seedy bread (3)
I believe the answer is:
rye
'seedy bread' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rye that I've seen before include "Cereal grass - Sussex Cinque Port" , "Hard liquor" , "Bitterly regret" , "New York bread" , "Hardy cereal crop" .)