milling

(noun) corrugated edge of a coin.

(verb) move about in a confused manner. Synonyms: mill, mill about, mill around.

(verb) grind with a mill. Synonyms: mill. Example: "Mill grain."

(verb) produce a ridge around the edge of. Synonyms: mill. Example: "Mill a coin."

(verb) roll out (metal) with a rolling machine. Synonyms: mill.