| Cinder 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. Thesaurus Entries 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 |