Knurly \Knurl"y\ (n[^u]rl"[y^]), [Compar. {Knurlier} (n[^u]rl"[i^]*[~e]r); superl. {Knurliest}.] [See {Knur}, and cf. {Gnarly}.] Full of knots; hard; tough; hence, capable of enduring or resisting much. [1913 Webster]