a nut specially constructed to prevent its coming loose, usually having a means of providing extra friction between itself and the screw.
Also called jam nut. a thin supplementary nut screwed down upon a regular nut to prevent its loosening.
What Does 🌰 Chestnut Emoji Mean?The chestnut emoji is sometimes referred to as the raisin emoji because it is so often mistaken for one—especially on small screens and on digital platforms where the nut is very dark brown.
Words Bookworms Mispronounce Because We Read Them FirstBooks teach us new words, but we're left to our own devices when it comes to pronunciation. Sometimes, we use phonic clues and do ourselves proud, but then there are the other times . . . when we're completely at a loss. Take a look at some of the words butchered by Dictionary.com fans who admit they learned them while reading.
Origin of lock nut
First recorded in 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for lock nut
The lock-nut D holds the screw securely once the pressure is adjusted.Practical Lithography|Alfred Seymour