Ellipse (4)
I believe the answer is:
oval
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ellipse</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oval that I've seen before include "Cricket ground - presidential office" , "6D 5A [TUBE STATION]" , "Shape of 25" , "Rounded like an egg" , "Courageous" .)