[ nur-ling ]
/ ˈnɜr lɪŋ /


a series of knurls, as on a knob.
Architecture. knulling.

Origin of knurling

First recorded in 1605–15; knurl + -ing1

Definition for knurling (2 of 2)


or nurl

[ nurl ]
/ nɜrl /


a small ridge or bead, especially one of a series, as on a button for decoration or on the edge of a thumbscrew to assist in obtaining a firm grip.
a knur.

verb (used with object)

to make knurls or ridges on.

Origin of knurl

1600–10; earlier knurle (noun). See knur, -le Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for knurling

British Dictionary definitions for knurling



/ (nɜːl) /

verb (tr)

to impress with a series of fine ridges or serrations


a small ridge, esp one of a series providing a rough surface that can be gripped

Word Origin for knurl

C17: probably from knur
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012