Pear-shaped fruit (6)
I believe the answer is:
quince
'pear-shaped fruit' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for quince that I've seen before include "Fruit used to make jam" , "Shakespearean part?" , "Acidic fruit used in preserves" , "Cinque (anag) - fruit" , "sliced fruit for newly-weds" .)