Doctor's report - on a man who has been shot? (8)
I believe the answer is:
bulletin
'doctor's report' is the definition.
'bulletin' can be an answer for 'report' (bulletin is a kind of report). I am unsure of the 'doctor's' bit.
'man who has been shot?' is the wordplay.
I cannot really understand how this works, but
'man' could be 'bull' (bull is a kind of man) and 'bull' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'on a' acts as a link.
Can you help me to learn more?
(Other definitions for bulletin that I've seen before include "News flash" , "Short official statement of news" , "News report" , "Short and regular up-date" , "Blue lint (anag.)" .)