Pompous doctor with wine gets picked up by a short-legged horse from the south (9)
I believe the answer is:
bombastic
'pompous' is the definition.
(I've seen this before)
'doctor with wine gets picked up by a short-legged horse from the south' is the wordplay.
I cannot really see how this works, but
'doctor' could be 'mb' (Bachelor of Medicine, Medicinae Baccalaureus) and 'mb' is found within the answer.
'wine' could be 'asti' (I've seen this before) and 'asti' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for bombastic that I've seen before include "Declamatory, ostentatiously lofty" , "affected" , "Pretentious" , "Bimbo acts in boastful way" , "High-flown" .)