To engage in bouldering.
A particle greater than 256 mm in diameter, following the Wentworth scale
A large marble, in children's games.
A session of bouldering; involvement in bouldering.
A large mass of stone detached from the surrounding land.
To produce slag.
To spit.
To become slag; to agglomerate when heated below the fusion point.
To reduce to slag.
To talk badly about; to malign or denigrate (someone).
Scum that forms on the surface of molten metal.
Scoria associated with a volcano.
A prostitute, or a woman who acts like one; a slut.
Waste material from a mine.
Hard aggregate remaining as a residue from blast furnaces, sometimes used as a surfacing material.
Impurities formed and separated out when a metal is smelted from ore; vitrified cinders.
A contemptible person, a scumbag.