名詞 crud:

1. heavy wet snow that is unsuitable for skiing
2. any substance considered disgustingly foul or unpleasant
   同義詞：filth, skank
3. an ill-defined bodily ailment

crud

n.（名詞）
Slang
【俚語】
A coating or an incrustation of filth or refuse.
污垢：污物或垃圾的覆蓋層或凝結(jié)物
Something loathsome, despicable, or worthless.
污垢，渣滓，可鄙者：令人厭惡、可鄙或無用的事物
One who is contemptible or disgusting.
卑鄙的人，令人厭惡的人
A disease or ailment, imaginary or real, especially one affecting the skin.
怪?。合胂蟮幕蛘鎸嵈嬖诘募膊』虿⊥?，尤指皮膚疾病
Sports Heavy, sticky snow that is unsuitable for skiing.
【體育運動】 污垢雪：重而粘的雪，不適于在其上滑行

來源：
Middle English crudde
中古英語 crudde
possibly from Old English *cruden [past participle of] crôdan [to press, drive]
可能源自 古英語 *cruden [] crôdan的過去分詞 [壓，驅(qū)使]