Do its fruits have shells on? (8)
I believe the answer is:
eggplant
'do' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for eggplant that I've seen before include "Its fruit is aubergine" , "What goes into moussaka" , "Vegetable" , "It's also called aubergine" , "Another word for aubergine" .)