Car crash (5)
I believe the answer is:
prang
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">car crash</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for prang that I've seen before include "damage" , "Plane or car crash" , "Crash involving a car" , "Popularly, a motoring contretemps" , "Crash (informal)" .)