Platform for public speaking (7)
I believe the answer is:
rostrum
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">platform for public speaking</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 rostrum that I've seen before include "place for speaker" , "stage" , "Platform for public speaking" , "beak" , "Rum rots (anag)" .)