Good fortune (4)
'good fortune' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for luck that I've seen before include "See 1" , "Good or bad fortune" , "''The devil''s children has the devil's ....'" , "'Fortune, fate (4)'" , "Chance, fate, fortune" .)
'good fortune' is the definition.
(prosperity is a kind of good fortune)
This is the entire clue.
(Other definitions for prosperity that I've seen before include "wealth" , "Financial success" , "Things going well" .)