Crossword Genius

Nuts? These may be needed (8)

Ross

I believe the answer is:

crackers

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'nuts?' is the definition.
(both can informally mean mad)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for crackers that I've seen before include "one may find them on the table tomorrow" , "Crazy (colloq.); biscuits" , "Crazy types" , "Nutty - biscuits" , "and some others touched" .)

I've seen this clue in The Globe and Mail.
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