Definition of nut:
a hard-shelled seed
; a fastener: a piece of metal, usually square
in shape, with a hole through it having machined internal threads
, intended to be screwed onto a bolt
or other threaded shaft
"1971: My attorney was waiting in a bar around the corner. â€œThis won't make the nut,â€ he said, â€œunless we have unlimited credit.â€ â€” Hunter S. Thompson, Fear and Loathing in Las Vegas (Harper Perennial 2005, p. 11)"