Rostrum (5)
I believe the answer is:
stand
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rostrum</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for stand that I've seen before include "Decline to interfere when one should?" , "Set up" , "Support" , "Sit here at a sports event" , "Be likely to rise" .)