scoria in Polish
scoria in Polish
szlag
The slag or dross that remains after the smelting of metal from an ore. [from 14th c.]
żużel
The slag or dross that remains after the smelting of metal from an ore. [from 14th c.]
scoria
(geology) Rough masses of rock formed by solidified lava, and which can be found around a volcano's crater. [from 18th c.]