New tramline's destination (8)
I believe the answer is:
terminal
'destination' is the definition.
(thesaurus)
'new tramline's' is the wordplay.
'new' indicates anagramming the letters.
'tramline' anagrammed gives 'TERMINAL'.
(Other definitions for terminal that I've seen before include "storage facility" , "Computer device" , "Electrical connection" , "Electrical connector" , "Tramline at the last stage of a fatal disease" .)