Rotating rod (7)
(Other definitions for spindle that I've seen before include "Rod used in spinning" , "Rod on which something rotates" , "Axle rod" , "Rod on which something revolves" , "Rod serving as an axis of rotation" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rotating rod</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 axle that I've seen before include "need of wheeled cart?" , "Rotating rod carrying wheels" , "Wheel support" , "Pin in revolver" , "Bar on which wheels rotate" .)