Angry because of a road junction (9)
I believe the answer is:
crossover
'a road junction' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'angry because of' is the wordplay.
'angry' becomes 'cross' (cross can mean annoyed or angry).
'because of' becomes 'over' (eg 'he's upset over it').
'cross'+'over'='CROSSOVER'
Can you help me to learn more?
(Other definitions for crossover that I've seen before include "where traversal is made" , "Successfully combining two styles" , "affecting different functions" , "Rock opera perhaps" , "combining distinct styles" .)