Spin rapidly; try (5)
I believe the answer is:
whirl
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">spin rapidly</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">try</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(whirl is a kind of try)</span><br/ ><br/ ></span>
(Other definitions for whirl that I've seen before include "Revolve" , "Swirl, spin" , "Frantic activity" , "Rotate" , "Circular movement - brief try" .)