1
- a small flake of soot or other dirt煤灰, 煤粉结片：
all those black smuts from the engine.
所有从机车里散落出的煤灰。
1.1
- a mark or smudge made by such a flake污点, 污迹：
the curtains were grey with city smuts.
窗帘被城市里的烟灰染成灰色了。
2
- mass noun a fungal disease of cereals in which parts of the ear change to black powder（谷类）黑穗病。
2.1
- The fungi belong to Ustilago and other genera, order Ustilaginales, class Teliomycetes.引发黑穗病的真菌属于黑粉菌属或其他属, 黑粉菌目, 冬孢菌纲。
3
- mass noun obscene or lascivious talk, writing, or pictures淫秽言谈（或作品、图片）：
porn, in this view, is far from being harmless smut.
从这种观点来看, 黄色作品根本就不是无害的淫秽材料。
(smutted, smutting)with obj.［often as adj. smutted］
1- mark with flakes or soot or other dirt染上污点, 被弄脏：
the smutted sky.
黑灰弥漫的天空。
1.1
- infect (a plant) with smut使（植株）染上黑穗病：
smutted wheat.
患黑穗病的小麦。
派生词
smuttily
adverbsmuttiness
nounsmutty
adjective （smuttier, smuttiest）词源
late Middle English （in the sense 'defile, corrupt, make obscene'）： related to German schmutzen; compare with SMUDGE1. The noun dates from the mid 17th cent.