Broken-down (8)
I believe the answer is:
derelict
'broken-down' is the definition.
(I know that broken-down can be written as derelict)
This is all the clue.
(Other definitions for derelict that I've seen before include "An abandoned ship" , "Deserted - vagrant" , "In a neglected condition" , "Fallen into ruin" , "Dosser" .)