Returned cased with almost luck by a no-exit road (3-2-3)
I believe the answer is:
cul-de-sac
'road' is the definition.
(cul-de-sac is a kind of road)
'returned cased with almost luck' is the wordplay.
'returned' is a reversal indicator.
'with' means one lot of letters go next to another.
'almost' means to remove the last letter (most of the word but not all of it).
'luck' with its final letter removed is 'luc'.
'cased'+'luc'='casedluc'
'casedluc' back-to-front is 'CUL-DE-SAC'.
'by a no-exit' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for cul-de-sac that I've seen before include "Blind alley" , "Street with only one way in or out" , "A street with only one entrance-exit" , "Dead-end street" , "'There's only one way in and out (3,2,3)'" .)