nut

1 of 2

noun

plural nuts
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
2
a
: a hard problem or undertaking
b
: core, heart
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 (such 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 or eccentric person
With all her on-set antics (which I loved), it would be easy to discount Cloris [Leachman] as a bit of a nut.Nellie Andreeva
also, sometimes offensive : someone who is not mentally sound
b
: enthusiast
a movie nut
7
nuts ˈnəts How to pronounce nut (audio) plural : nonsense
often used interjectionally
8
slang : a person's head
9
usually vulgar : testis
10
: the amount of money that must be earned in order to break even
11
nutlike adjective

nut

2 of 2

verb

nutted; nutting

intransitive verb

: to gather or seek nuts

Examples of nut in a Sentence

Noun 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.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Americans are advised to eat more fruits and vegetables, include a variety of protein sources—seafood, lean meats, poultry, eggs, legumes, soy products, and unsalted nuts/seeds—and opt for protein sources lower in solid fats and calories. Thomas G. Moukawsher, MSNBC Newsweek, 13 Apr. 2025 Botanically the fruit is a drupe, not a nut. Kurt Snibbe, Oc Register, 13 Apr. 2025 But this time, his front-right tire was slow to come off, seemingly as the wheel gun did not connect with the wheel nut on the first attempt. Luke Smith, New York Times, 13 Apr. 2025 The kit includes a four-pin power switch wiring cable, a fan power bridge wiring cable, a USB dongle extension, and a bag with three nuts for mounting. PC Magazine, 12 Apr. 2025 See All Example Sentences for nut

Word History

Etymology

Noun

Middle English nute, note, from Old English hnutu; akin to Old High German nuz nut and perhaps to Latin nux nut

First Known Use

Noun

before the 12th century, in the meaning defined at sense 1a(1)

Verb

1604, in the meaning defined above

Time Traveler
The first known use of nut was before the 12th century

Cite this Entry

“Nut.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nut. Accessed 23 Apr. 2025.

Kids Definition

nut

noun
ˈnət
1
a
: a hard-shelled dry fruit (as a peanut in the shell) or seed (as a Brazil nut) with an inner kernel
also : this kernel
b
: a dry one-seeded fruit (as an acorn, hazelnut, or chestnut) that has a woody outer layer and does not break open when it is ripe
2
: a block of metal with a hole in it that is fastened to a bolt or screw by means of a screw thread within the hole
3
: the ridge on the upper end of the fingerboard of a stringed instrument over which the strings pass
4
a
: a foolish or odd person
b
: enthusiast
a movie nut
Etymology

Noun

Old English hnutu "nut"

More from Merriam-Webster on nut

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