Destroyer (7)
I believe the answer is:
wrecker
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">destroyer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(wrecker is a kind of destroyer)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for wrecker that I've seen before include "US breakdown vehicle" , "Vandal" , "Person on demolition work - destroyer" , "Saboteur" , "Lurer of ships onto rocks" .)