[smʌt], (Noun)

Definitions:
- a small flake of soot or other dirt or a mark left by one
(e.g: all those black smuts from the engine)

- a fungal disease of cereals in which parts of the ear change to black powder
(e.g: a few bad crop years with smut and drought and frost)

- obscene or lascivious talk, writing, or pictures
(e.g: porn, in his view, is far from being harmless smut)


Phrases:

Origin:
late Middle English (in the sense ‘defile, corrupt, make obscene’): related to German schmutzen; compare with smudge. The noun dates from the mid 17th century