wing·nut or wing nut (wĭngnŭt)
1. A nut with winglike projections for thumb and forefinger leverage in turning. Also called thumbnut.
a. A person with extreme or fanatical political views.
b. A crazy or eccentric person.
[Senses 2a and 2b influenced by WING, faction.]
(click for a larger image)wingnut
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.