LAP n.
ng 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 timbers. -- Lap weld, a lap joint made by welding together overlapping edges or end…
LEAD n. 2 definitions
d, due to lead poisoning. (b) (Naut.) A sounding line. -- Lead mill, a leaden polishing wheel, used by lapidaries. -- Lead ocher (Min.), a massive sulphur-yellow oxide of lead. Same as Massicot. -- Lead pencil, a pencil of which the marking material is graphite (black lead). -- Lead plant (Bot.), a low leguminous p…
LINE n.
Hogarth). -- Line of centers. (Mach.) (a) A line joining two centers, or fulcra, as of wheels or levers. (b) A line which determines a dead center. See Dead center, under Dead. -- Line of dip (Geol.), a line in the plane of a stratum, or part of a stratum, perpendicular to its intersection with a horizontal plane; t…