Lap·i·da·ry n.; pl. Lapidaries
1. An artificer who cuts, polishes, and engraves precious stones; hence, a dealer in precious stones.
2. A virtuoso skilled in gems or precious stones; a connoisseur of lapidary work.
Lapidary's lathe, Lapidary's mill, Lapidary's wheel, a machine consisting essentially of a revolving lap on a vertical spindle, used by a lapidary for grinding and polishing.