Other forms: ingots
A processed piece of fine metal is an ingot. If you find a buried treasure chest, cross your fingers that it's full of gold ingots!
When ingot was originally used in the 1500s, it meant "mold in which metal is cast." To make an ingot, metal is melted and poured into such a mold, where it hardens into a bar. Ingots are used to make metal easy to transport, store, and measure — and sometimes to be directly traded for money, particularly in the case of gold.