Avocado-shaped (4)
I believe the answer is:
oval
'avocado-shaped' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oval that I've seen before include "Courageous" , "Elliptical figure" , "Where England regained the Ashes" , "Ellipsoidal" , "Geometric shape" .)