Four-star review (4)
I believe the answer is:
'four-star review' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rave that I've seen before include "modern dance music" , "Rage" , "Laudatory sort of review - quite a rant" , "Talk wildly in modern youth dance" , "Illegal party; talk madly" .)