crud 
(kr

d)
KEY NOUN:
- Slang
- A coating or an incrustation of filth or refuse.
- Something loathsome, despicable, or worthless.
- One who is contemptible or disgusting.
- A disease or ailment, imaginary or real, especially one affecting the skin.
- Sports Heavy, sticky snow that is unsuitable for skiing.
ETYMOLOGY:Middle English
crudde, possibly from Old English *
cruden, past participle of
cr
dan,
to press, drive