Priest and doctor requiring some fluids (5)
I believe the answer is:
druid
'priest' is the definition.
(druid is a kind of priest)
'doctor requiring some fluids' is the wordplay.
I cannot really understand how this works, but
'doctor' could be 'dr' (abbreviation) and 'dr' is located in the answer.
This may be the basis of clue (or it may be nonsense).
'and' acts as a link.
Can you help me to learn more?
(Other definitions for druid that I've seen before include "Ancient priest of Wales" , "old magician?" , "Ancient Celt priest" , "Ancient Celtic priest" , "Pre-Christian Celtic priest" .)