Elliptical shape (4)
I believe the answer is:
oval
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">elliptical shape</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oval that I've seen before include "6D 5A [TUBE STATION]" , "Race track" , "sports ground" , "It's egg-shaped for cricketers" , "Cricket ground - presidential office" .)