名詞 smut:

1. a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink
   同義詞：carbon black, lampblack, soot, crock
2. destructive diseases of plants (especially cereal grasses) caused by fungi that produce black powdery masses of spores
3. any fungus of the order Ustilaginales
   同義詞：smut fungus
4. an offensive or indecent word or phrase
   同義詞：obscenity, vulgarism, filth, dirty word
5. creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire
   同義詞：pornography, porno, porn, erotica

動詞 smut:

1. make obscene
2. stain with a dirty substance, such as soot
3. become affected with smut
4. affect with smut or mildew, as of a crop such as corn

1. Don't talk smut.
   不要說臟話。
2. The tabloid papers are full of smut.
   這些小報(bào)充斥著下流的東西。