Cause to start burning again (8)
I believe the answer is:
rekindle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cause to start burning again</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 rekindle that I've seen before include "Cause to burn again" , "Light (a fire) again" , "Cause to start burning again" , "Get the fire going again" , "Revive (something lost)" .)