Writ (8)
I believe the answer is:
subpoena
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">writ</span>' is the definition.<br/ ><span class="explanation-format__explanation">(subpoena is a kind of writ)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for subpoena that I've seen before include "Hearing reminder" , "Write ordering someone to court" , "Writ commanding court attendance" , "calls for appearance in court" , "A summons to attend court case" .)