One of the mysteries of the English language finally explained.
A small projecting knob or ridge, especially in a series around the edge of something.
nodule, gnarl, node, lump, knob, swelling, growth, gall, protuberance, bumpView synonyms
- ‘When I grabbed the gleaming chrome door handle, I felt machined bumps, or knurls, that provide extra grip.’
- ‘These knurls are slightly harder and in most applications deliver a substantial increase in tool life.’
- ‘The slots for the knurls are not critical and can easily be cut using a hacksaw and a file.’
Early 17th century: apparently a derivative of knur.
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