English

A knurled pattern for grip.

Noun

knurl ‎(plural knurls)

1. A contorted knot in wood.
2. A crossgrained protuberance; a nodule; a boss or projection.
3. A lined or crossgrained pattern of ridges or indentations rolled or pressed into a part for grip.

Verb

knurl ‎(third-person singular simple present knurls, present participle knurling, simple past and past participle knurled)

1. To roll or press a pattern of ridges or indentations into a part for grip.

References

1. ↑ “gnarled” in Douglas Harper, Online Etymology Dictionary (2001).