Muscular or active (8)
I believe the answer is:
athletic
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">muscular</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">active</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for athletic that I've seen before include "Fit and sporty" , "Team" , "Sporty, able-bodied" , "Strong and vigorous" , "See 12" .)