Unmanageable without legume or fruit (6)

I believe the answer is:

banana

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'fruit' is the definition.
(banana is a kind of fruit)

I don't understand the remainder of the clue.

(Other definitions for banana that I've seen before include "plant" , "One out of hand" , "Fruit with soft, sweet flesh" , "Fruity type" , "Yellow-skinned fruit" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

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