Girl about to hug priest (5)
I believe the answer is:
celia
'girl' is the definition.
'about to hug priest' is the wordplay.
'about to' becomes 'ca' (I've seen this in other clues).
'hug' is an insertion indicator.
'priest' becomes 'eli' (I've seen this before).
'ca' placed around 'eli' is 'CELIA'.
(Other definitions for celia that I've seen before include "Character in Tales from Shakespeare" , "Frederick's daughter" , "Rosalind's cousin" , "Daughter to Frederick" , "lady" .)