1
[ noun ] worthless material that should be removed

Synonyms

impurity

Examples

"there were impurities in the water"

Used in print

(William C. Smith, "Why Fear Ideas?"...)

Will mere debate on that proposition , even_though it be free and untrammeled , remove the dross and leave a residue of refined gold ?

Related terms

waste

2
[ noun ] the scum formed by oxidation at the surface of molten metals

Synonyms

scoria slag

Related terms

scum basic_slag

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