Gamble represented giving priority to adult accomplice's role (8)
I believe the answer is:
abetment
'accomplice's role' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'gamble represented giving priority to adult' is the wordplay.
'gamble' becomes 'bet' (bet is a kind of gamble).
'represented giving priority' becomes 'ment' (I can't justify this - if you can you should give a lot more credence to this answer).
'to' says to put letters next to each other (I've seen this in other clues).
'adult' becomes 'a' (abbreviation).
'bet'+'ment'='betment'
'betment' after 'a' is 'ABETMENT'.
Can you help me to learn more?
(Another definition for abetment that I've seen is " Aiding".)