NURL
- to make grooves in [v -ED, -ING, -S]
- small ridge or bead, esp. one of a series, as on a button for decoration or on the edge of a thumbscrew to assist in obtaining a firm grip
- knur
- to make knurls or ridges on
- to knurl (to make grooves or ridges in) [v NURLED, NURLING, NURLS]