Muscular strength (5)
I believe the answer is:
brawn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">muscular strength</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 brawn that I've seen before include "meatloaf" , "This is strong" , "Muscle; strength" , "Beefiness" , "Pressed cooked meat; strength" .)