slag
/slæɡ/
Waste material from a coal mine
Scum that forms on the surface of molten metal
Impurities formed and separated out when a metal is smelted from ore; vitrified cinders
Hard aggregate remaining as a residue from blast furnaces, sometimes used as a surfacing material
Scoria associated with a volcano
A coward
(chiefly Cockney) a contemptible person, a scumbag
A prostitute
A woman (sometimes a man) who has loose morals relating to sex; a slut