Definition of nut
1 a (1) : a hard-shelled dry fruit or seed with a separable rind or shell and interior kernel (2) : the kernel of a nut b : a dry indehiscent one-seeded fruit with a woody pericarp
3 : a perforated block usually of metal that has an internal screw thread and is used on a bolt or screw for tightening or holding something
4 : the ridge in a stringed instrument (as a violin) over which the strings pass on the upper end of the fingerboard
5 : a small lump (as of butter)
6 a : a foolish, eccentric, or crazy person b : enthusiast <a movie nut>
7 plural : nonsense —often used interjectionally
8 slang : a person's head
nutlikeplay \-ˌlīk\ adjective
Examples of nut in a sentence
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.
Origin and Etymology of nut
Middle English nute, note, from Old English hnutu; akin to Old High German nuz nut and perhaps to Latin nux nut
First Known Use: before 12th century
Definition of nut
: to gather or seek nuts
First Known Use of nut
NUT Defined for English Language Learners
Definition of nut for English Language Learners
: 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
NUT Defined for Kids
Definition of nut for Students
1 : a dry fruit or seed with a firm inner kernel and a hard shell
2 : the often edible kernel of a nut
3 : a small piece of metal with a hole through it that can be screwed onto a bolt for tightening or holding something
4 : a foolish or crazy person
5 : a person who is very interested in or enthusiastic about something <a sports nut>
nutlike\-ˌlīk\ adjective <a nutlike flavor>
Seen and Heard
What made you want to look up nut? Please tell us where you read or heard it (including the quote, if possible).