1
: a nut screwed down hard on another to prevent it from slacking back
2
: 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
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
Dictionary Entries Near locknut
Cite this Entry
“Locknut.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/locknut. Accessed 19 Apr. 2024.
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