- glass colored by being mixed with stained glass during fusion.
- glass melted in a pot.
Origin of pot metal
Examples from the Web for pot metal
To give satisfactory colour the best of pot-metal glass is essential.
Observe that this yellow stain is neither an enamel nor a pot-metal colour, but literally a stain, the only stain used upon glass.
The joyous sparkling tone of Tours lights proves a skillful use of pot-metal yellow.How France Built Her Cathedrals|Elizabeth Boyle O'Reilly
Here the transparent glass is the window; and the design, whether in pot-metal or in enamel, shows more or less against the clear.
The pieces that are yellow all over may, I think, be assumed to be pot-metal.