Spin out (7)
I believe the answer is:
prolong
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">spin out</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for prolong that I've seen before include "Make last" , "Extend the duration of" , "Perpetuate" , "Extend in length" , "Spin out" .)