Turn round quickly (5)
I believe the answer is:
wheel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">turn round quickly</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 wheel that I've seen before include "Revolutionary invention!" , "Turn round quickly" , "Ship's steering device" , "Circular steering device" , "Circular object (in no need of re-invention!)" .)