Exhausted: why chicken didn't cross road? (7)
I believe the answer is:
rundown
This clue could be a double definition.
'exhausted why chicken didn't cross' is the first definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I can't see?
'road?' is the second definition.
Both the answer and definition are adjectives. Perhaps you can see an association between them that I can't see?
Can you help me to learn more?
(Other definitions for rundown that I've seen before include "Decry" , "reduction in numbers" , "brief analysis" , "Be critical of" , "summary" .)