Meaning & use
slag
Last updated
The stony waste matter left over after metal has been separated from its ore by smelting.
See it in a sentence
Piles of slag from the old steel mill still dot the hillside.
Workers used the leftover slag to pave nearby roads.
A note on using this word
Primarily a metallurgical and industrial term; it also has an informal, offensive slang use in British English that this entry does not cover.
Words with a similar meaning
dross
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