With no excess fat (5)
I believe the answer is:
spare
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">with no excess fat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for spare that I've seen before include "With no excess fat" , "Extra item just in case" , "Not required" , "Lean and treat mercifully" , "not in actual use" .)