He, Clive, wrecked the carriage! (7)
I believe the answer is:
vehicle
'the carriage' is the definition.
(thesaurus)
'he clive wrecked' is the wordplay.
'wrecked' indicates anagramming the letters.
'he'+'clive'='heclive'
'heclive' is an anagram of 'VEHICLE'.
(Other definitions for vehicle that I've seen before include "Structure for transporting" , "Road transport" , "Mode of transport" , "Lorry perhaps" , "Conveyance for transporting passengers on land" .)