knur

n. [ See Knar, Gnar. ] A contorted knot in wood; a crossgrained protuberance; a nodule; a boss or projection. [ 1913 Webster ]

2. One who, or that which, is crossgrained. [ 1913 Webster ]

v. t. To provide with ridges, to assist the grasp, as in the edge of a flat knob, or coin; to mill. [ 1913 Webster ]

a. 1. Full of knots; gnarled. [ 1913 Webster ]

2. Milled, as the head of a screw, or the edge of a coin. [ 1913 Webster ]

[ Compar. Knurlier superl. Knurliest. ] [ See Knur, and cf. Gnarly. ] Full of knots; hard; tough; hence, capable of enduring or resisting much. [ 1913 Webster ]