pot metal

plural pot metals

1. countableuncountableThe metal from which iron pots are made, different from common pig iron.
2. countableuncountableAn alloy of copper with lead used for making large vessels for various purposes in the arts.

   Copper, with about a fourth of its weight of lead, forms pot-metal, used by the ancients for their coins.

   1819, William Nicholson, American Edition of the British Encyclopedia

3. countableuncountableA kind of stained glass, the colours of which are incorporated with the melted glass in the pot
4. countableespeciallyuncountableautomotiveSynonym of monkey metal.

   Synonyms: monkey metal