n.

1. 淫词秽语；淫秽作品
   There is a smut dealer just near the high school.

   在那所高中附近，有个卖黄色书刊的人。

   Here comes the smut, Martha. Dad is drunk and cursing heaven again.

   玛莎，听见脏话了吧。爸喝醉了，又在诅咒老天爷。

2. 黑穗病
3. 污点

vt.

1. 弄黑
2. 使害上黑穗病

vi.

1. 弄脏
2. 害上黑穗病

n.

1. a small flake of soot or dirt.
2. a fungal disease of cereals in which parts of the ear change to black powder.
3. indecent or obscene talk, writing, or pictures.

v.

1. mark with smuts.
2. infect with smut.