Muscular, brawny (5)
I believe the answer is:
beefy
<span class="explanation-format__ClueExplanation">I believe this clue 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">brawny</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for beefy that I've seen before include "Athletic and muscular (non-vegetarian?)" , "Strong and muscular" , "Burly" , "Colloquially muscular" , "Brawny" .)