The end of the tramline (8)
I believe the answer is:
terminal
'the end' is the definition.
(I've seen this in another clue)
'of the tramline' is the wordplay.
'of' indicates anagramming the letters (the answer comes from or 'of' the letters).
'tramline' anagrammed gives 'TERMINAL'.
(Other definitions for terminal that I've seen before include "Ending; airport building" , "Concluding, final" , "part of Heathrow?" , "Visionary person" , "Last station for tramline" .)