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or wing nut  (wĭng′nŭt)
1. A nut with winglike projections for thumb and forefinger leverage in turning. Also called thumbnut.
2. Slang
a. A person with extreme or fanatical political views.
b. A crazy or eccentric person.

[Senses 2a and 2b influenced by wing, faction.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Jackson's remarkable documentary, produced by his Wingnut Films Productions and released by Warner Bros, draws on 100 hours of archival footage, transformed both by Burbank-based Stereo D and his own team at Park Road Post in New Zealand.
8 February 2019 - Minnesota, US-based advertising agency Augeo has acquired Minneapolis, US-based agency Wingnut Advertising to double the size of Augeo Digital's agency, strengthening its capabilities in creative, strategic branding, website development and digital communications, the company said.
M2 EQUITYBITES-February 8, 2019-Augeo Acquires Wingnut Advertising to Expand Agency Capabilities
To show the tools off, Apple invited Wingnut AR, the company formed by "Lord of the Rings" director Peter Jackson, on stage.
Wingnut's boat handling and tactical skills are still sharp enough at 91 to ensure he's the current Australian Dragon champion, putting younger aspirants to shame.
qs Despite being off the course for 153 days, Charlie Wingnut can land the 4.25 for Sue Smith.
1.40 (3m 10yds, PS6,000 added): 1 ST GREGORY (IRE) (B P Harding) 7-2JtFav; 2 ONWITHTHEPARTY 7-2JtFav; 3 CHARLIE WINGNUT (IRE) 8-1.
In recent years, he has re-branded himself as a documentary filmmaker, and in the process he has become something even more outlandish: a right-wing conspiracy wingnut, the kind of "thinker" who takes off from Barack Obama birther theories and just keeps going, spinning out a web of comic-book liberal evil, D'Souza's new film, "Hillary's America: The Secret History of the Democratic Party," might be described as propaganda that slides into paranoia.
Instead of a piece of prose to sum up his time on this earth, Innes would rather be remembered for grinning beside a wingnut in a fake explosive belt who terrified a plane full of people because his ex-wife (apparently rightly so) wants nothing to do with him.
During the school summer holidays, a European eagle owl called Wingnut, Aristotle the Harris hawk and red-tailed buzzard named Rita have been trying out the scare tactic on aggressive seagulls in Mowbray Park, Sunderland.