the.com/nut

a seed wearing armor, a fastener with attitude, and an insult that doubles as a compliment.

means A nut is a hard-shelled seed or fruit you crack open to eat, or a small metal block with a threaded hole that screws onto a bolt to hold things together — and, informally, a person who's eccentric, obsessed, or slightly unhinged.

from From Old English 'hnutu,' the woody-shelled seed, with cousins across the Germanic family (Old Norse 'hnot,' Dutch 'noot,' German 'Nuss') and likely deeper roots in a Proto-Indo-European source also tied to Latin 'nux.' The fastener sense came later by resemblance — a small, hard, tightly-clenched lump — and the 'crazy person' sense grew from the slang use of 'nut' for the head (as in 'off his nut'), the idea being that something had come loose inside it.

botanical fraud
Peanuts and cashews are not true nuts
engineering
Nuts and bolts predate accurate threads by centuries
allergy weight
A single peanut can trigger fatal reactions
deadly drop
Falling coconuts reportedly kill people yearly
slang reach
Means crazy person, enthusiast, and small fastener
for instance

brazil nut — largest tree nut by weight, native to amazon rainforest, ~5,000 nuts per tree annually

macadamia nut — world's most expensive nut at $25/lb, native to australia, hardest shell of any nut

black walnut — native north american nut tree, produces juglone that kills nearby plants, valued lumber since 1600s

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