- 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.
- 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
“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.