Leaving for something new (9)
I believe the answer is:
departure
'leaving' is the definition.
(I know that leaving can be written as departure)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for departure that I've seen before include "The act of going away" , "Variation from the expected" , "outbound journey?" , "Not the usual" , "Lucky" .)