Crossword Genius

Fruit and exercise has to manage (5)

Ross

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'fruit' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
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(Other definitions for hinge that I've seen before include "hang" , "Moveable joint" , "door open because of this?" , "Joint on which something swings" , "What a door depends upon!" .)

I've seen this clue in The Mirror.
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