smuts

noun

• Soot.
• A flake of ash or soot.
• Sexually vulgar material; something that is sexual in a dirty way; pornographic material.
• Obscene language; ribaldry; obscenity.
• Any of a range of fungi, mostly Ustilaginomycetes, that cause plant disease in grasses, including cereal crops; the disease so caused.
• Bad, soft coal containing earthy matter, found in the immediate locality of faults.