1. noun /nʌt/
a) A hard-shelled seed.
My attorney was waiting in a bar around the corner. “This wont make the nut,” he said, “unless we have unlimited credit.”
b) A fastener: a piece of metal, usually square or hexagonal in shape, with a hole through it having machined internal threads, intended to be screwed onto a bolt or other threaded shaft.
See Also: coconut, groundnut, hazelnut, monkeynut, peanut, walnut, nutbeam, nutbag, nutcase, nutter, nutcracker, nutdriver, nutmeat, nutmeg, nutshell, sweet as a nut
2. verb /nʌt/
Wikipedia foundation.