Sheepish round wine producer (5)
I believe the answer is:
ovine
'sheepish' is the definition.
(I've seen this in another clue)
'round wine producer' is the wordplay.
'round' becomes 'o' (round can mean a round object).
'wine producer' becomes 'vine'.
'o'+'vine'='OVINE'
(Other definitions for ovine that I've seen before include "Pertaining to sheep" , "Like the Cheviots" , "like a mug" , "Relating to sheep" , "Like a sheep" .)