mud, dirt, or a sticky natural substance such as animal waste脏东西;(动物的)粪便
There was green muck at the bottom of the boat.船底有绿色的脏东西。
You're treading muck into the carpet with your dirty shoes!你的脏鞋子把地毯弄得脏兮兮的!
a pile of dog muck一堆狗屎
UK something you consider very unpleasant or very low quality质量低劣的东西
I'm not eating that muck!我才不吃那让人反胃的东西!
The immigrants were treated like muck (= treated badly, as if they were not important).移民们被视为泥土草芥。