Something to save for (5,3)
I believe the answer is:
rainy day
'something to save for' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rainy day that I've seen before include "One should save money for a . . . . . . . . - may need it to buy umbrella" , "Wet time" , "One saves up for it" , "Time of financial need" , "When savings may be needed" .)