Spiky-skinned fruit (9)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
pineapple
(Other definitions for pineapple that I've seen before include "Large fleshy fruit with a tuft of stiff leaves" , "Large juicy tropical fruit, or a grenade" , "Fruit (tree and fruit!)" , "Fruit grown on ground" , "Juicy tropical fruit often sold segmented" .)