wing nut

American  

Or wingnut

noun

1. a nut having two flat, widely projecting pieces such that it can be readily tightened with the thumb and forefinger.

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wing nut British  

noun

1. Also called: butterfly nut.  a threaded nut tightened by hand by means of two flat lugs or wings projecting from the central body

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Usage

What does wing nut mean? Wing nut is an insulting slang term for a person who’s considered eccentric or who has extreme political views.In a completely different context, wing nut is also a term for a nut (a piece of usually metal hardware that attaches to a bolt) with two tabs on its sides that kind of look like wings. The “wings” make turning the nut by hand easier when it’s being attached to a bolt. It’s also called a butterfly nut (because of the “wings”) or a thumbnut (because it can be easily turned with the thumb and forefinger).[caption id="attachment_154442" align="alignnone" width="300"] Getty / Jill Ferry[/caption]Both senses of the word can also be spelled wingnut and wing-nut.The only connection between the two senses of the word is probably the word nut, which can be used to refer to a person considered eccentric (someone who is nutty). However, nut can also be used as a negative slang term for a person who is mentally ill, and wing nut can also imply this. Keep in mind that when used in this way, these terms may reinforce harmful stereotypes and associations with mental illness.Example: Every local government meeting has a few wing nuts who show up to spout off conspiracy theories during the public comment session. 

Etymology

Origin of wing nut

First recorded in 1895–1900

Example Sentences

“It’s a fair description of who I am. I’m also trying to distance myself from the wing nuts in the Republican Party.”

From Seattle Times

“I think he’s a wing nut, to put it bluntly, and I think Josh Shapiro is just more even-keeled, and I think he would do a decent job.”

From New York Times

By shunning Thursday’s commemoration of the Jan. 6 attack, Republican leaders, as usual, left a vacuum that let the wing nuts speak for the party.

From Washington Post

When Ms. Sinema ran for Congress in 2012, in a new swing district, her Republican opponent painted her as a lefty wing nut.

From New York Times

So perhaps he really does think of himself as a victim of the right wing nuts, the people whose unchecked hatred of Obama, racism, and loathing of feminism turned them into political arsonists.

From Salon