pornography.
Sexually vulgar material; something that is sexual in a dirty way; pornographic material.
Bad, soft coal containing earthy matter, found in the immediate locality of faults.
Obscene language; ribaldry; obscenity.
A flake of ash or soot.
Soot.
Any of a range of fungi, mostly Ustilaginomycetes, that cause plant disease in grasses, including cereal crops; the disease so caused.
To stain (or be stained) with soot or other dirt.
To clear of the smut fungus.
To taint (grain, etc.) with the smut fungus.
To become tainted by the smut fungus.