knurl

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knurl

, nurl
a small ridge, esp one of a series providing a rough surface that can be gripped

knurl

[nərl]
(engineering)
To provide a surface, usually a metal, with small ridges or knobs to ensure a firm grip or as a decorative feature.

knur, knurl

A knot or burl, 1 in wood.
References in periodicals archive ?
NURL firebrand Chris Blain ensured that this was not the end of the action, with the prop hunting for poly teeth with his burly arm rarely lowering from horizontal.
As a dejected Northumbria team trudged from the battle ground, Andy Stanton wore a smile as wide as Christmas Day, safe in the knowledge that NURL had contributed their part to a stunning Stan Calvert victory over their city rivals.