noun

1. Soot.

2. A flake of ash or soot.

3. Sexually vulgar material; something that is sexual in a dirty way; pornographic material.

Synonyms: filth, filth

verb

1. To stain (or be stained) with soot or other dirt.

2. To taint (grain, etc.) with the smut fungus.

3. To become tainted by the smut fungus.