"Good job!" (5)
(Other definitions for bravo that I've seen before include "A cry meaning well done" , "Good show!" , "Three cheers" , "Cry of approbation" , "Expression of approval" .)
'good job' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nice one that I've seen before include "Congratulatory phrase" , "very good" , "like it!" .)