Duck from Belize roasted (4)
I believe the answer is:
zero
'duck' is the definition.
(I know that duck can be written as zero)
'from belize roasted' is the wordplay.
'from' indicates the answer is hidden within the clue.
'ZERO' is hidden in the letters of 'belize roasted'.
(Other definitions for zero that I've seen before include "You'll find nothing" , "Very bad visibility" , "Love" , "Worthless person" , "The hour to leave" .)