the fused material formed during the smelting or refining of metals by combining the flux with gangue, impurities in the metal, etc. It usually consists of a mixture of silicates with calcium, phosphorus, sulphur, etc
See also basic slag
2.
a mass of rough fragments of pyroclastic rock and cinders derived from a volcanic eruption; scoria
3.
a mixture of shale, clay, coal dust, and other mineral waste produced during coal mining
4. British derogatory, slang
a coarse or dissipated girl or woman
verbWord forms: slags, slagging or slagged
5. (transitive) British slang(usually foll by off)
to abuse (someone) verbally
6. (intransitive) Australian slang
to spit
Derived forms
slagging (ˈslagging)
noun
slaggy (ˈslaggy)
adjective
Word origin
C16: from Middle Low German slagge, perhaps from slagen to slay