lock·​nut ˈläk-ˌnət How to pronounce locknut (audio)
: a nut screwed down hard on another to prevent it from slacking back
: a nut so constructed that it locks itself when screwed tight against another part

Examples of locknut in a Sentence

Recent Examples on the Web Secure the air intakes at the barrel's base by threading the pipe locknuts onto the close nipples. Joe Kohl-Riggs, Popular Mechanics, 27 July 2023 Then, tighten the locknut to secure the valve. Joseph Truini, Popular Mechanics, 16 Feb. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'locknut.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1855, in the meaning defined at sense 1

Time Traveler
The first known use of locknut was in 1855

Dictionary Entries Near locknut

Cite this Entry

“Locknut.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/locknut. Accessed 27 Feb. 2024.

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