Knurl

Webster's Dictionary of the English Language

·noun One who, or that which, is crossgrained.

II. Knurl ·noun A contorted knot in wood; a crossgrained protuberance; a nodule; a boss or projection.

III. Knurl ·vt To provide with ridges, to assist the grasp, as in the edge of a flat knob, or coin; to Mill.