Cry of praise or joy (7)
I believe the answer is:
hosanna
'cry of praise or joy' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for hosanna that I've seen before include "Hebrew word in the Bible, an exclamation of praise" , "Shout of acclamation" , "Shout of praise" , "Cry of religious adoration, often in the highest" , "Said in praise of God" .)