Fruit and nuts bachelor's put away (6)
I believe the answer is:
ananas
'fruit' is the definition.
(I know that Ananas is a type of fruit)
'nuts bachelor's put away' is the wordplay.
'nuts' becomes 'bananas' (as in crazy).
'bachelor' becomes 'B' (abbreviation e.g. BA=Bachelor of Arts).
'put away' indicates named letters should be taken away.
'bananas' with 'b' removed is 'ANANAS'.
'and' is the link.
(Other definitions for ananas that I've seen before include "Black top on this fruit" , "F" , "piece of fruit" , "Pineapple" , "Sort of fruit" .)