Raised platforms (6)
I believe the answer is:
rostra
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">raised platforms</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 rostra that I've seen before include "stages" , "Raised platforms" , "The beaks" , "where they make their speeches?" .)