Hail Mary (3,5)
I believe the answer is:
ave maria
'hail mary' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for ave maria that I've seen before include "Catholic prayer" , "Prayer to the Virgin Mary" , "Hail Mary, in Latin" , "Hail Mary (Lat.)" , "Work of Schubert" .)