word of the day: knurl

The word of the day is knurl:

Etymology:  apparently a derivative (? dim.) of knur n.; but compare also knarl n., gnarl n.¹

1. A small projection, protuberance, or excrescence; a knot, knob, boss, nodule, etc.; a small bead or ridge, esp. one of a series worked upon a metal surface for ornamentation or other purpose. 

2. A thick-set, stumpy person; a deformed dwarf. dial. 

3. A knurling-tool. (OED)

"José had drawn the watch with remarkable fidelity, putting in every feature (at least every essential feature - he did not put in 'Westclox, shock resistant, made in USA), not just 'the time' (though this was faithfully registered as 11:31), but every second as well, and the inset seconds dial, and, not least, the knurled winder and trapezoid clip of the watch, used to attach it to a chain."

 - Oliver Sacks, The Man Who Mistook His Wife for a Hat