This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The vitreous mass left as a residue by the smelting of metallic ore.

n. See scoria.

v. To change into or form slag.

n. Waste material from a coal mine.

n. Scum that forms on the surface of molten metal.

n. Impurities formed and separated out when a metal is smelted from ore; vitrified cinders (Wikipedia).

n. Hard aggregate remaining as a residue from blast furnaces, sometimes used as a surfacing material.

n. Scoria associated with a volcano.

n. A coward.

n. A contemptible person, a scumbag.

n. A prostitute.

n. A woman (sometimes a man) who has loose morals relating to sex; a slut.

v. To produce slag.

v. To talk badly about; to malign or denigrate (someone).

v. To spit.

n. The dross, or recrement, of a metal; also, vitrified cinders.

n. The scoria of a volcano.

n. A product of smelting, containing, mostly as silicates, the substances not sought to be produced as matte or metal, and having a lower specific gravity than the latter; -- called also, esp. in iron smelting, cinder. The slag of iron blast furnaces is essentially silicate of calcium, magnesium, and aluminium; that of lead and copper smelting furnaces contains iron.

v. To form, or form into, a slag; to agglomerate when heated below the fusion point.

n. The earthy matter separated, in a more or less completely fused and vitrified condition, during the reduction of a metal from its ore.

n. The scoria of a volcano.

To form a slag, or to cohere when heated so as to become a slag-like mass.

n. A hollow or depression of land.

n. In the puddling process for making wrought-iron, the slag which forms when, as a preliminary step not always taken, air is blown down upon the surface of a charge of melted cask iron in a specially constructed hearth. Silicon is the principal substance removed from the iron, and the slag consists mainly of ferrous silicate.

In metal: To convert into slag: as, an excess of limestone used as a flux may to a greater or less extent slag the lining of a furnace.

To cake together as the result of chemical action at a heat lower than that of fusion.

v. convert into slag

n. the scum formed by oxidation at the surface of molten metals

"If I call the queen a dirty parasite slag is that OK, it is just words."

slag hearth   

slagged    slagging    slags   

convert   

lava    phosphatic slag    sharp slag    thomas slag    basic slag    gray slag    refinery slag    ore-furnace slag   

slagging    slagged    cinder   

slagged    slagging    slaggy   

cinder    clinker    clink    dross    recrement    promiscuous woman   

Ag    Bragg    ag    bag    bagge    brag    dag    drag    fag    flag   

cinder    lava    rubble    soot    pumice    dross    scoria    charcoal    rubbish    clinkers