Answer: knurl

AnswerCrossword Clue
KNURLRidge on the edge of a coin.
knurlto make knurls or ridges on
knurlto make grooves or ridges in
knurlknur
knurlsmall 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
KNURLBit of metal texturing
KNURLSmall projecting ridge
KNURLSmall ridge on the edge of a button or dial
KNURLProtuberance
KNURLRidge on a coin.
KNURLRidge on a thumbscrew
KNURLSmall ridge, as on a thumbscrew.
KNURLKnob.
KNURLButton ridge
KNURLMake ridges on
KNURLTree knot
KNURLCoin-edge ridge
KNURLSmall protuberance
KNURLSmall knob
KNURLThumbscrew ridge