knurl

Meanings

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.

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

Etymology

From knur + -le (“diminutive”), from Middle English knarre (“knot in wood”), earlier sense “a stone”, likely influenced by Old Norse knǫrr. gnarl is a later variant, from gnarled, via knurled.