Did the doctor have anything to drink? (7)
I believe the answer is:
draught
'drink?' is the definition.
(draught is a kind of drink)
'did the doctor have anything' is the wordplay.
'did the doctor' becomes 'dr' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'have' is a charade indicator (letters next to each other).
'anything' becomes 'aught' ('aught' means anything).
'dr'+'aught'='DRAUGHT'
'to' is the link.
Can you help me to learn more?
(Other definitions for draught that I've seen before include "drink needed" , "Current - drink - drawing - checker" , "Depth of a ship in the water" , "Swallow" , "Unwelcome blow" .)