- [uncountable] (informal)
stories, pictures or comments about sex that deal with it in a way that some people find offensive 淫秽小说（或图片、言语） He can entertain audiences without resorting to smut. 他可以不借助淫秽来娱乐观众。
- [uncountable, countable]
dirt, ash, etc. that causes a black mark on something; a black mark made by this （黑色）污物，灰垢，污迹，污点 His face was covered with smuts from the engine. 他的脸上布满了发动机发出的灰尘。
Word Originlate Middle English (in the sense ‘defile, corrupt, make obscene’): related to German schmutzen; compare with smudge. The noun dates from the mid 17th cent.