Goes first (6)
I believe the answer is:
starts
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">goes first</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for starts that I've seen before include "reacts in surprise" , "Commences" , "Makes sudden movement from pain or surprise" , "breaks" , "Begins or flinches" .)