knurl

A knob, knot, or other small protuberance.

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.

To provide with knurls; mill.

A knot; a hard substance; a nodule of stone; a protuberance in the bark of a tree.

A deformed dwarf; a humpback.

In photography, a milled-edge roller used for dotting and softening outrunning lines and making dark spaces lighter.

A contorted knot in wood; a crossgrained protuberance; a nodule; a boss or projection.

One who, or that which, is crossgrained.

To provide with ridges, to assist the grasp, as in the edge of a flat knob, or coin; to mill.

A contorted knot in wood.