noun, verb (used with object)
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.
verb (used with object)
to make knurls or ridges on.
Origin of knurl
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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
"hard excrescence," c.1600, probably a diminutive of Middle English knor "knot" (c.1400), related to gnarl, from Proto-Germanic *knur- (cf. German knorren "a knotty excrescence"). Related: Knurly.
Online Etymology Dictionary, © 2010 Douglas Harper