Snow White's GP? (3)
I believe the answer is:
doc
'gp?' is the definition.
(gp is a kind of doc)
'snow white's' is the wordplay.
I cannot really see how this works, but
'snow' could be 'c' (synonyms) and 'c' is found within the answer.
The remaining letters 'do' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for doc that I've seen before include "Consultant" , "Medic, in short" , "Physician (colloq.)" , "Quack" , "Medic (familiar)" .)