Priest restricted by piles coming back (3)
I believe the answer is:
eli
'priest' is the definition.
(Biblical character)
'restricted by piles coming back' is the wordplay.
'restricted by' says the answer is hidden in the clue.
'coming back' shows that the letters should be reversed in order.
'ile' can be found hidden inside 'piles'.
'ile' written backwards gives 'ELI'.
(Other definitions for eli that I've seen before include "patriarch" , "Distort then untruth to get a Biblical character" , "OT high priest" , "Old Testament priest, the prophet Samuel's teacher" , "Biblical teacher of Samuel" .)