1. an alloy of copper and lead, formerly used for making plumbing fixtures, bearings, etc.
2. cast iron of a quality suitable for making pots.
3. a low-grade nonferrous alloy used for die casting.
a. glass colored by being mixed with stained glass during fusion.
b. glass melted in a pot.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.