Use again (7)
I believe the answer is:
recycle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">use again</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to recycle something is to use it again)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for recycle that I've seen before include "save resources" , "Behave greenly" , "Process something so it can be used again" , "Keep and use again" , "Use (waste) again" .)