Leading journalist turned up in terminal (5)
I believe the answer is:
depot
'terminal' is the definition.
('depot' can be a synonym of 'terminal')
'leading journalist turned up' is the wordplay.
'leading' becomes 'top'.
'journalist' becomes 'ed' (short for editor).
'turned up' is a reversal indicator.
'top'+'ed'='toped'
'toped' in reverse letter order is 'DEPOT'.
'in' is the link.
(Other definitions for depot that I've seen before include "Regimental HQ" , "Bus station or warehouse" , "Headquarters - storehouse" , "Storehouse or terminus" , "Storehouse or main bus station (5)" .)