Diverted tramline — ending here? (8)
I believe the answer is:
terminal
'ending here?' is the definition.
(eg the end of a railway)
'diverted tramline' is the wordplay.
'diverted' is an anagram indicator (each letter get diverted elsewhere).
'tramline' with letters rearranged gives 'TERMINAL'.
(Other definitions for terminal that I've seen before include "Situated at the end" , "Final or fatal" , "End point of line - section of airport" , "End of journey for tramline" , "Tramline (anag.)" .)