Exercising weight (8)
I believe the answer is:
dumbbell
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">exercising weight</span>' is the definition.<br/ ><span class="explanation-format__explanation">(dumbbell is a kind of exercising weight)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dumbbell that I've seen before include "Short weighted bar for exercises - sounds stupid" , "Weightlifter's item" , "Exercise weight" , "Exercising weight" , "Weight-training equipment" .)