1. (n.) Partly burned or vitrified coal, or other combustible, in which fire is extinct.

2. (n.) A hot coal without flame; an ember.

3. (n.) A scale thrown off in forging metal.

4. (n.) The slag of a furnace, or scoriaceous lava from a volcano.

alluvion alluvium ash ashes brand burning ember calx carbon charcoal clinker coal coke coom deposition deposits diluvium draff dregs dross ember feces firebrand froth fume grounds lava lees live coal loess moraine offscum precipitate precipitation reek scoria scum sediment settlings silt sinter slag smoke smudge smut soot sublimate sullage