A court proceeding (5)
I believe the answer is:
trial
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a court proceeding</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for trial that I've seen before include "Test of suitability" , "Court appearance on charge - it's an ordeal" , "Test of performance" , "Legal proceedings or a test run" , "Ordeal or lawsuit" .)