Fruit or nuts (7)
I believe the answer is:
bananas
I believe this clue is a double definition.
'fruit' is the first definition.
(I've seen this before)
'nuts' is the second definition.
(as in crazy)
'or' acts as a link.
(Other definitions for bananas that I've seen before include "Fruit - nuts" , "Fruit; mad" , "hands" , "nutty" , "Mad - curved fruits" .)