Definition of nut
- a movie nut
The squirrel cracked the nut and ate the meat inside.
walnuts, almonds, peanuts, and other nuts
The squirrel sat and ate the nut.
Are you allergic to nuts?
a bowl of nuts and raisins
That guy is a real nut.
She's a real baseball nut.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nut.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use: before 12th century
in the meaning defined at sense 1a(1)
addict, aficionado (also afficionado), buff, bug, devotee, enthusiast, fan, fanatic, fancier, fiend, fool, freak, habitué (also habitue), head, hound, junkie (also junky), lover, maniac, maven (also mavin), sucker;
: a small dry fruit with a hard shell that grows on trees, bushes, etc.
: the inside part of a nut that is used as food
: a piece of metal that has a hole through it so that it can be screwed onto a bolt or screw
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