LAP n. 2 definitions
, lead, or other soft metal, used to hold a cutting or polishing powder in cutting glass, gems, and the like, or in polishing cutlery, etc. It is usually in the form of wheel or disk, which revolves on a vertical axis. Lap joint, a joint made by one layer, part, or piece, overlapping another, as in the scarfing of timb…
LAPIDARY n. 2 definitions
A virtuoso skilled in gems or precious stones; a connoisseur of lapidary work. Lapidary's lathe, mill, or wheel, a machine consisting essentially of a revolving lap on a vertical spindle, used by a lapidary for grinding and polishing.