knurl 
(nûrl)
(nûrl)n.
1. A knob, knot, or other small protuberance.
2. One of a series of small ridges or grooves on the surface or edge of a metal object, such as a thumbscrew, to aid in gripping.
tr.v. knurled, knurl·ing, knurls
To provide with knurls; mill.
[ Probably diminutive of KNUR.]
knurled (nûrld) adj.
knurly adj.
- overcoating
- overcome
- overcommit
- overcommitment
- overcompensate
- overcompensation
- overcompensatory
- overconfidence
- overconfident
- overconfidently
- overcorrect
- overcorrection
- overcritical
- overcritically
- overcrop
- overcrowd
- overdevelop
- overdevelopment
- overdiagnose
- overdiagnosis
- overdo
- overdoer
- overdog
- overdominance
- overdominant