Signed off (5)
I believe the answer is:
ended
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">signed off</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ended that I've seen before include "Concluded" , "Broke off; finished" , "Culminated" , "wound-up" , "Done" .)