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knurl

/nɜːl/ noun

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about knurl at Wordnik → Where our words come from →

  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

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

Origin

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.

From Wiktionary, via Kaikki.org (CC BY-SA)