An explosive (8)
I believe the answer is:
dynamite
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">an explosive</span>' is the definition.<br/ ><span class="explanation-format__explanation">(dynamite is an explosive)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dynamite that I've seen before include "Explosive - amazing thing" , "May end it with explosive" , "Spectacular (or dangerous) person (or thing)" , "Dainty me could be explosive" , "High explosive" .)