Age in time, raddled (3)
I believe the answer is:
era
'age' is the definition.
(both can mean a long time)
'in time raddled' is the wordplay.
'in' indicates a hidden word.
'ERA' is hidden in the letters of 'time raddled'.
(Other definitions for era that I've seen before include "Epoch, period" , "Eon" , "8" , "Long historic period" , "Long period of time" .)